unimore/triennale-appunti-steffo
unimore/triennale-appunti-steffo
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triennale-appunti-steffo/docs/route-OttimizzazioneLineare.chunk.b3b17.js.map
Stefano Pigozzi c4b8c683fa
0.3.6
2020-06-08 20:54:32 +02:00

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style from \"./TablePanel.less\";\n\nexport default function (props) {\n return (\n <table class={style.tablepanel}>\n {props.children}\n </table>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"example\":\"example__9acWs\"};","// extracted by mini-css-extract-plugin\nmodule.exports = {\"box\":\"box__3cKyY\",\"default\":\"default__v-emJ\",\"red\":\"red__339Cz\",\"orange\":\"orange__24_8v\",\"yellow\":\"yellow__1Jo9W\",\"lime\":\"lime__34yV5\",\"cyan\":\"cyan__3RqLr\",\"blue\":\"blue__13Wnj\",\"magenta\":\"magenta__2tkzq\"};","import style from \"./Styles.less\";\n\nexport default function (props) {\n return (\n <abbr class={style.min} title={\"In problemi in cui il primale è di minimizzazione.\"}>{props.children ? props.children : \"min\"}</abbr>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"inline\":\"inline__1yl8V\",\"block\":\"block__fPiiB\"};","import style from \"./Styles.less\";\n\nexport default function (props) {\n return (\n <abbr class={style.finite} title={\"I punti del poliedro sono finiti.\"}>{props.children ? props.children : \"finito\"}</abbr>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"todo\":\"todo__2IWIS\"};","import Split from \"../Layout/Split\";\nimport {Fragment} from \"preact\";\n\nexport default function (props) {\n return (\n <Fragment>\n <h2>\n {props.title}\n </h2>\n <Split>\n {props.children}\n </Split>\n </Fragment>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"title\":\"title__3ZVpg\",\"contents\":\"contents__20_NI\"};","import {createContext} from \"preact\";\n\nexport default createContext(null);\n","import style from './Latex.less';\nimport {useContext} from \"preact/hooks\";\nimport LatexRenderColor from \"../../contexts/LatexRenderColor\";\nimport LatexDefaultInline from \"../../contexts/LatexDefaultInline\";\nimport LatexDefaultDisplay from \"../../contexts/LatexDefaultDisplay\";\n\nexport const LatexDisplay = Object.freeze({\n INLINE: style.inline,\n BLOCK: style.block,\n})\n\nexport default function(props) {\n // black, blue, brown, cyan, darkgray, gray, green, lightgray, lime, magenta, olive, orange, pink, purple, red, teal, violet, white, yellow\n let renderColor = useContext(LatexRenderColor);\n let defaultInline = useContext(LatexDefaultInline);\n let defaultDisplay = useContext(LatexDefaultDisplay);\n\n let inline;\n if(props.inline === undefined) {\n inline = defaultInline;\n }\n else {\n inline = props.inline;\n }\n\n let display;\n if(props.display === undefined) {\n if(defaultDisplay === null) {\n display = LatexDisplay.INLINE;\n }\n else {\n display = defaultDisplay;\n }\n }\n else {\n display = props.display;\n }\n\n if(inline) {\n let equation = `\\\\inline {\\\\color{${renderColor}} ${props.children} }`;\n return (\n <img src={`https://latex.codecogs.com/svg.latex?${equation}`}\n alt={props.children}\n title={props.children}\n class={style.latex + \" \" + display}\n />\n );\n }\n else {\n let equation = `{\\\\color{${renderColor}} ${props.children} }`;\n return (\n <img src={`https://latex.codecogs.com/svg.latex?${equation}`}\n alt={props.children}\n title={props.children}\n class={style.latex + \" \" + display}\n />\n );\n }\n}\n","import {Component} from 'preact'\nimport style from \"./Timer.less\"\n\n\nexport default class Timer extends Component {\n constructor() {\n super();\n this.state = {\n \"now\": Date.now()\n };\n this.timer = null;\n }\n\n componentDidMount() {\n this.timer = setInterval(() => {\n this.setState({\"now\": Date.now()})\n }, 1000)\n }\n\n componentWillUnmount() {\n if(this.timer !== null) {\n clearInterval(this.timer)\n }\n }\n\n render() {\n let dateTo = \"Unknown date\";\n let className = style.timer;\n\n let parts = {\n milliseconds: \"?\",\n seconds: \"?\",\n minutes: \"?\",\n hours: \"?\",\n days: \"?\",\n };\n\n if(this.props.to) {\n dateTo = new Date(this.props.to);\n let timeLeft = dateTo - this.state.now;\n\n if(timeLeft > 0) {\n parts = {\n milliseconds: timeLeft % 1000,\n seconds: Math.floor(timeLeft / 1000) % 60,\n minutes: Math.floor(timeLeft / 60000) % 60,\n hours: Math.floor(timeLeft / 3600000) % 24,\n days: Math.floor(timeLeft / 86400000),\n };\n }\n\n else {\n parts = {\n milliseconds: 0,\n seconds: 0,\n minutes: 0,\n hours: 0,\n days: 0,\n };\n\n className += \" \" + style.expired;\n }\n }\n else {\n className += \" \" + style.unknown;\n }\n\n return (\n <div class={className} title={dateTo}>\n <div class={style.days + \" \" + style.count}>\n {parts.days}\n </div>\n <div className={style.days + \" \" + style.text}>\n giorni\n </div>\n <div class={style.hours + \" \" + style.count}>\n {parts.hours}\n </div>\n <div className={style.hours + \" \" + style.text}>\n ore\n </div>\n <div class={style.minutes + \" \" + style.count}>\n {parts.minutes}\n </div>\n <div className={style.minutes + \" \" + style.text}>\n minuti\n </div>\n <div class={style.seconds + \" \" + style.count}>\n {parts.seconds}\n </div>\n <div class={style.seconds + \" \" + style.text}>\n secondi\n </div>\n </div>\n )\n }\n}\n","import { options } from 'preact';\n\n/** @type {number} */\nlet currentIndex;\n\n/** @type {import('./internal').Component} */\nlet currentComponent;\n\n/** @type {number} */\nlet currentHook = 0;\n\n/** @type {Array<import('./internal').Component>} */\nlet afterPaintEffects = [];\n\nlet oldBeforeRender = options._render;\nlet oldAfterDiff = options.diffed;\nlet oldCommit = options._commit;\nlet oldBeforeUnmount = options.unmount;\n\nconst RAF_TIMEOUT = 100;\nlet prevRaf;\n\noptions._render = vnode => {\n\tif (oldBeforeRender) oldBeforeRender(vnode);\n\n\tcurrentComponent = vnode._component;\n\tcurrentIndex = 0;\n\n\tconst hooks = currentComponent.__hooks;\n\tif (hooks) {\n\t\thooks._pendingEffects.forEach(invokeCleanup);\n\t\thooks._pendingEffects.forEach(invokeEffect);\n\t\thooks._pendingEffects = [];\n\t}\n};\n\noptions.diffed = vnode => {\n\tif (oldAfterDiff) oldAfterDiff(vnode);\n\n\tconst c = vnode._component;\n\tif (c && c.__hooks && c.__hooks._pendingEffects.length) {\n\t\tafterPaint(afterPaintEffects.push(c));\n\t}\n};\n\noptions._commit = (vnode, commitQueue) => {\n\tcommitQueue.some(component => {\n\t\ttry {\n\t\t\tcomponent._renderCallbacks.forEach(invokeCleanup);\n\t\t\tcomponent._renderCallbacks = component._renderCallbacks.filter(cb =>\n\t\t\t\tcb._value ? invokeEffect(cb) : true\n\t\t\t);\n\t\t} catch (e) {\n\t\t\tcommitQueue.some(c => {\n\t\t\t\tif (c._renderCallbacks) c._renderCallbacks = [];\n\t\t\t});\n\t\t\tcommitQueue = [];\n\t\t\toptions._catchError(e, component._vnode);\n\t\t}\n\t});\n\n\tif (oldCommit) oldCommit(vnode, commitQueue);\n};\n\noptions.unmount = vnode => {\n\tif (oldBeforeUnmount) oldBeforeUnmount(vnode);\n\n\tconst c = vnode._component;\n\tif (c && c.__hooks) {\n\t\ttry {\n\t\t\tc.__hooks._list.forEach(invokeCleanup);\n\t\t} catch (e) {\n\t\t\toptions._catchError(e, c._vnode);\n\t\t}\n\t}\n};\n\n/**\n * Get a hook's state from the currentComponent\n * @param {number} index The index of the hook to get\n * @param {number} type The index of the hook to get\n * @returns {import('./internal').HookState}\n */\nfunction getHookState(index, type) {\n\tif (options._hook) {\n\t\toptions._hook(currentComponent, index, currentHook || type);\n\t}\n\tcurrentHook = 0;\n\n\t// Largely inspired by:\n\t// * https://github.com/michael-klein/funcy.js/blob/f6be73468e6ec46b0ff5aa3cc4c9baf72a29025a/src/hooks/core_hooks.mjs\n\t// * https://github.com/michael-klein/funcy.js/blob/650beaa58c43c33a74820a3c98b3c7079cf2e333/src/renderer.mjs\n\t// Other implementations to look at:\n\t// * https://codesandbox.io/s/mnox05qp8\n\tconst hooks =\n\t\tcurrentComponent.__hooks ||\n\t\t(currentComponent.__hooks = {\n\t\t\t_list: [],\n\t\t\t_pendingEffects: []\n\t\t});\n\n\tif (index >= hooks._list.length) {\n\t\thooks._list.push({});\n\t}\n\treturn hooks._list[index];\n}\n\n/**\n * @param {import('./index').StateUpdater<any>} initialState\n */\nexport function useState(initialState) {\n\tcurrentHook = 1;\n\treturn useReducer(invokeOrReturn, initialState);\n}\n\n/**\n * @param {import('./index').Reducer<any, any>} reducer\n * @param {import('./index').StateUpdater<any>} initialState\n * @param {(initialState: any) => void} [init]\n * @returns {[ any, (state: any) => void ]}\n */\nexport function useReducer(reducer, initialState, init) {\n\t/** @type {import('./internal').ReducerHookState} */\n\tconst hookState = getHookState(currentIndex++, 2);\n\thookState._reducer = reducer;\n\tif (!hookState._component) {\n\t\thookState._component = currentComponent;\n\n\t\thookState._value = [\n\t\t\t!init ? invokeOrReturn(undefined, initialState) : init(initialState),\n\n\t\t\taction => {\n\t\t\t\tconst nextValue = hookState._reducer(hookState._value[0], action);\n\t\t\t\tif (hookState._value[0] !== nextValue) {\n\t\t\t\t\thookState._value[0] = nextValue;\n\t\t\t\t\thookState._component.setState({});\n\t\t\t\t}\n\t\t\t}\n\t\t];\n\t}\n\n\treturn hookState._value;\n}\n\n/**\n * @param {import('./internal').Effect} callback\n * @param {any[]} args\n */\nexport function useEffect(callback, args) {\n\t/** @type {import('./internal').EffectHookState} */\n\tconst state = getHookState(currentIndex++, 3);\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\n\t\tstate._value = callback;\n\t\tstate._args = args;\n\n\t\tcurrentComponent.__hooks._pendingEffects.push(state);\n\t}\n}\n\n/**\n * @param {import('./internal').Effect} callback\n * @param {any[]} args\n */\nexport function useLayoutEffect(callback, args) {\n\t/** @type {import('./internal').EffectHookState} */\n\tconst state = getHookState(currentIndex++, 4);\n\tif (!options._skipEffects && argsChanged(state._args, args)) {\n\t\tstate._value = callback;\n\t\tstate._args = args;\n\n\t\tcurrentComponent._renderCallbacks.push(state);\n\t}\n}\n\nexport function useRef(initialValue) {\n\tcurrentHook = 5;\n\treturn useMemo(() => ({ current: initialValue }), []);\n}\n\n/**\n * @param {object} ref\n * @param {() => object} createHandle\n * @param {any[]} args\n */\nexport function useImperativeHandle(ref, createHandle, args) {\n\tcurrentHook = 6;\n\tuseLayoutEffect(\n\t\t() => {\n\t\t\tif (typeof ref == 'function') ref(createHandle());\n\t\t\telse if (ref) ref.current = createHandle();\n\t\t},\n\t\targs == null ? args : args.concat(ref)\n\t);\n}\n\n/**\n * @param {() => any} factory\n * @param {any[]} args\n */\nexport function useMemo(factory, args) {\n\t/** @type {import('./internal').MemoHookState} */\n\tconst state = getHookState(currentIndex++, 7);\n\tif (argsChanged(state._args, args)) {\n\t\tstate._args = args;\n\t\tstate._factory = factory;\n\t\treturn (state._value = factory());\n\t}\n\n\treturn state._value;\n}\n\n/**\n * @param {() => void} callback\n * @param {any[]} args\n */\nexport function useCallback(callback, args) {\n\tcurrentHook = 8;\n\treturn useMemo(() => callback, args);\n}\n\n/**\n * @param {import('./internal').PreactContext} context\n */\nexport function useContext(context) {\n\tconst provider = currentComponent.context[context._id];\n\t// We could skip this call here, but than we'd not call\n\t// `options._hook`. We need to do that in order to make\n\t// the devtools aware of this hook.\n\tconst state = getHookState(currentIndex++, 9);\n\t// The devtools needs access to the context object to\n\t// be able to pull of the default value when no provider\n\t// is present in the tree.\n\tstate._context = context;\n\tif (!provider) return context._defaultValue;\n\t// This is probably not safe to convert to \"!\"\n\tif (state._value == null) {\n\t\tstate._value = true;\n\t\tprovider.sub(currentComponent);\n\t}\n\treturn provider.props.value;\n}\n\n/**\n * Display a custom label for a custom hook for the devtools panel\n * @type {<T>(value: T, cb?: (value: T) => string | number) => void}\n */\nexport function useDebugValue(value, formatter) {\n\tif (options.useDebugValue) {\n\t\toptions.useDebugValue(formatter ? formatter(value) : value);\n\t}\n}\n\nexport function useErrorBoundary(cb) {\n\tconst state = getHookState(currentIndex++, 10);\n\tconst errState = useState();\n\tstate._value = cb;\n\tif (!currentComponent.componentDidCatch) {\n\t\tcurrentComponent.componentDidCatch = err => {\n\t\t\tif (state._value) state._value(err);\n\t\t\terrState[1](err);\n\t\t};\n\t}\n\treturn [\n\t\terrState[0],\n\t\t() => {\n\t\t\terrState[1](undefined);\n\t\t}\n\t];\n}\n\n/**\n * After paint effects consumer.\n */\nfunction flushAfterPaintEffects() {\n\tafterPaintEffects.some(component => {\n\t\tif (component._parentDom) {\n\t\t\ttry {\n\t\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeCleanup);\n\t\t\t\tcomponent.__hooks._pendingEffects.forEach(invokeEffect);\n\t\t\t\tcomponent.__hooks._pendingEffects = [];\n\t\t\t} catch (e) {\n\t\t\t\tcomponent.__hooks._pendingEffects = [];\n\t\t\t\toptions._catchError(e, component._vnode);\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\t});\n\tafterPaintEffects = [];\n}\n\n/**\n * Schedule a callback to be invoked after the browser has a chance to paint a new frame.\n * Do this by combining requestAnimationFrame (rAF) + setTimeout to invoke a callback after\n * the next browser frame.\n *\n * Also, schedule a timeout in parallel to the the rAF to ensure the callback is invoked\n * even if RAF doesn't fire (for example if the browser tab is not visible)\n *\n * @param {() => void} callback\n */\nfunction afterNextFrame(callback) {\n\tconst done = () => {\n\t\tclearTimeout(timeout);\n\t\tcancelAnimationFrame(raf);\n\t\tsetTimeout(callback);\n\t};\n\tconst timeout = setTimeout(done, RAF_TIMEOUT);\n\n\tlet raf;\n\tif (typeof window != 'undefined') {\n\t\traf = requestAnimationFrame(done);\n\t}\n}\n\n// Note: if someone used options.debounceRendering = requestAnimationFrame,\n// then effects will ALWAYS run on the NEXT frame instead of the current one, incurring a ~16ms delay.\n// Perhaps this is not such a big deal.\n/**\n * Schedule afterPaintEffects flush after the browser paints\n * @param {number} newQueueLength\n */\nfunction afterPaint(newQueueLength) {\n\tif (newQueueLength === 1 || prevRaf !== options.requestAnimationFrame) {\n\t\tprevRaf = options.requestAnimationFrame;\n\t\t(prevRaf || afterNextFrame)(flushAfterPaintEffects);\n\t}\n}\n\n/**\n * @param {import('./internal').EffectHookState} hook\n */\nfunction invokeCleanup(hook) {\n\tif (typeof hook._cleanup == 'function') hook._cleanup();\n}\n\n/**\n * Invoke a Hook's effect\n * @param {import('./internal').EffectHookState} hook\n */\nfunction invokeEffect(hook) {\n\thook._cleanup = hook._value();\n}\n\n/**\n * @param {any[]} oldArgs\n * @param {any[]} newArgs\n */\nfunction argsChanged(oldArgs, newArgs) {\n\treturn !oldArgs || newArgs.some((arg, index) => arg !== oldArgs[index]);\n}\n\nfunction invokeOrReturn(arg, f) {\n\treturn typeof f == 'function' ? f(arg) : f;\n}\n","import style from \"./Todo.less\";\n\nexport default function (props) {\n\tif(process.env.NODE_ENV === \"development\") {\n\t\treturn <span class={style.todo}>{props.children}</span>;\n\t}\n\telse {\n\t\treturn null;\n\t}\n}\n","import style from \"./Styles.less\";\n\nexport default function (props) {\n return (\n <abbr class={style.max} title={\"In problemi in cui il primale è di massimizzazione.\"}>{props.children ? props.children : \"max\"}</abbr>\n );\n}\n","import style from \"./Split.less\";\n\nexport default function (props) {\n let children;\n\n if(Array.isArray(props.children)) {\n children = props.children.map(element => {\n return (\n <div class={style.splitchild}>\n {element}\n </div>\n );\n });\n }\n\n else {\n children = (\n <div class={style.splitchild}>\n {props.children}\n </div>\n );\n }\n return (\n <div class={style.split}>\n <div class={style.splitparent}>{children}</div>\n </div>\n );\n}\n","import BLatex from \"./BLatex\";\n\nexport default function (props) {\n return (\n <p>\n <BLatex>{props.children}</BLatex>\n </p>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"tablepanel\":\"tablepanel__1Wil3\"};","// extracted by mini-css-extract-plugin\nmodule.exports = {\"unbounded\":\"unbounded__KZ9A2\",\"unfeasible\":\"unfeasible__9LnzW\",\"finite\":\"finite__3_e9S\",\"min\":\"min__3VEkp\",\"max\":\"max__BtCuw\"};","import style from \"./Example.less\";\nimport {Component} from \"preact\";\n\nexport default function(props) {\n return (\n <div class={style.example}>\n {props.children}\n </div>\n );\n}\n","import style from \"./Box.less\";\n\nexport const BoxColors = Object.freeze({\n RED: style.red,\n ORANGE: style.orange,\n YELLOW: style.yellow,\n LIME: style.lime,\n CYAN: style.cyan,\n BLUE: style.blue,\n MAGENTA: style.magenta,\n DEFAULT: style.default\n})\n\nexport default function (props) {\n let color = BoxColors.DEFAULT;\n if(props.color) {\n color = props.color;\n }\n\n return (\n <div class={style.box + \" \" + color}>\n {props.children}\n </div>\n );\n}\n","import style from \"./Styles.less\";\n\nexport default function (props) {\n return (\n <abbr class={style.unfeasible} title={\"Il poliedro non contiene punti.\"}>{props.children ? props.children : \"vuoto\"}</abbr>\n );\n}\n","import style from \"./Styles.less\";\n\nexport default function (props) {\n return (\n <abbr class={style.unbounded} title={\"I punti del poliedro sono infiniti.\"}>{props.children ? props.children : \"illimitato\"}</abbr>\n );\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"timer\":\"timer__3Z2pL\",\"days\":\"days__myhe2\",\"hours\":\"hours__3JUDn\",\"minutes\":\"minutes__24lD7\",\"seconds\":\"seconds__2vZ4f\",\"count\":\"count__chi9X\",\"text\":\"text__34ldC\",\"unknown\":\"unknown__3sT2P\",\"expired\":\"expired__zNiuP\"};","import Section from \"../components/Elements/Section\";\nimport Latex from \"../components/Rendering/Latex\";\nimport Panel from \"../components/Elements/Panel\";\nimport Example from \"../components/Elements/Example\";\nimport Todo from \"../components/Elements/Todo\";\nimport Timer from \"../components/Elements/Timer\";\nimport Empty from \"../components/PageSpecific/OttimizzazioneLineare/Empty\";\nimport Unbounded from \"../components/PageSpecific/OttimizzazioneLineare/Unbounded\";\nimport Min from \"../components/PageSpecific/OttimizzazioneLineare/Min\";\nimport Max from \"../components/PageSpecific/OttimizzazioneLineare/Max\";\nimport PLatex from \"../components/Rendering/PLatex\";\nimport LatexDefaultInline from \"../contexts/LatexDefaultInline\";\nimport TablePanel from \"../components/Elements/TablePanel\";\nimport Finite from \"../components/PageSpecific/OttimizzazioneLineare/Finite\";\n\nconst r = String.raw;\n\nexport default function(props) {\n return (\n <div>\n <h1>Ottimizzazione lineare intera</h1>\n <Section title={\"Unimore\"}>\n <Panel title={\"Videolezioni su YouTube\"}>\n <p>\n Ho rimosso il rumore in sottofondo da tutti i video di Ricerca Operativa!\n </p>\n <p>\n <b><a href={\"https://www.youtube.com/playlist?list=PLh93e8qjTszffkHNn-19CqUOhHFbhBlBh\"}>Guardate i video qui!</a></b>\n </p>\n </Panel>\n <Panel title={\"Prossimi appelli\"}>\n <ol>\n <li><Timer to={\"2020-06-08\"}/></li>\n <li><Timer to={\"2020-06-25\"}/></li>\n <li><Timer to={\"2020-07-14\"}/></li>\n </ol>\n </Panel>\n </Section>\n <LatexDefaultInline.Provider value={false}>\n <Section title={\"Glossario\"}>\n <TablePanel>\n <thead>\n <tr>\n <th><abbr title={\"Vettore / matrice\"}>v</abbr></th>\n <th><abbr title={\"Elemento singolo\"}>s</abbr></th>\n <th>Significato</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td><Latex>{r`\\mathbf{x}`}</Latex></td>\n <td><Latex>{r`x_i`}</Latex></td>\n <td>Incognite</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{s}`}</Latex></td>\n <td><Latex>{r`s_i`}</Latex></td>\n <td>Variabili slack</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{c}`}</Latex></td>\n <td><Latex>{r`c_i`}</Latex></td>\n <td>Coefficienti della funzione obiettivo</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{A}`}</Latex></td>\n <td><Latex>{r`a_{ij}`}</Latex></td>\n <td>Coefficienti dei vincoli</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{b}`}</Latex></td>\n <td><Latex>{r`b_i`}</Latex></td>\n <td>Termini noti dei vincoli</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{y}`}</Latex></td>\n <td><Latex>{r`y_i`}</Latex></td>\n <td>Incognite artificiali</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{u}`}</Latex></td>\n <td><Latex>{r`u_i`}</Latex></td>\n <td>Coefficienti di rilassamento</td>\n </tr>\n <tr>\n <td/>\n <td><Latex>{r`c_0`}</Latex></td>\n <td>Valore ottimo di un problema</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{x}_B`}</Latex></td>\n <td/>\n <td>Incognite in base</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{c}_B`}</Latex></td>\n <td/>\n <td>Coefficienti della funzione obiettivo delle variabili in base</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{B}`}</Latex></td>\n <td/>\n <td>Coefficienti dei vincoli delle variabili in base</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{x}_F`}</Latex></td>\n <td/>\n <td>Incognite fuori base</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{c}_F`}</Latex></td>\n <td/>\n <td>Coefficienti della funzione obiettivo delle variabili fuori base</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{F}`}</Latex></td>\n <td/>\n <td>Coefficienti dei vincoli delle variabili fuori base</td>\n </tr>\n </tbody>\n </TablePanel>\n <TablePanel>\n <thead>\n <tr>\n <th>Simboli</th>\n <th>Significato</th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td><Latex>{r`\\mathbf{c}^T \\mathbf{x}`}</Latex></td>\n <td>Soluzione del problema</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{A} \\mathbf{x} = \\mathbf{b}`}</Latex></td>\n <td>Vincoli in forma standard</td>\n </tr>\n <tr>\n <td><Latex>{r`z(\\dots)`}</Latex></td>\n <td>Funzione obiettivo</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{u}^T \\mathbf{b}`}</Latex></td>\n <td>Soluzione del problema duale</td>\n </tr>\n <tr>\n <td><Latex>{r`\\mathbf{u}^T \\mathbf{A} = \\mathbf{c}^T`}</Latex></td>\n <td>Vincoli del problema duale in forma standard</td>\n </tr>\n </tbody>\n </TablePanel>\n </Section>\n </LatexDefaultInline.Provider>\n <Section title={\"Le basi\"}>\n <Panel title={\"Funzione obiettivo\"}>\n <p>\n La funzione obiettivo è la funzione con valore noto sconosciuto:\n </p>\n <p>\n <Latex>{r`z = C_1 \\cdot x_1 + C_2 \\cdot x_2 + C_n \\cdot x_n`}</Latex>\n </p>\n </Panel>\n </Section>\n <Section title={\"Problemi di ottimizzazione lineare\"}>\n <Panel title={\"Cosa sono?\"}>\n <p>\n I problemi di ottimizzazione lineare sono problemi che cercano di <Min>minimizzare</Min>/<Max>massimizzare</Max> il valore di una <i>funzione obiettivo</i> le cui incognite sono sottoposte a un <b>sistema di <i>vincoli</i></b>.\n </p>\n </Panel>\n <Panel title={\"Funzione obiettivo\"}>\n <p>\n La funzione da <Min>minimizzare</Min>/<Max>massimizzare</Max>.\n </p>\n <p>\n Il vettore dei suoi coefficienti è detto <Latex>{r`\\mathbf{c}`}</Latex>, mentre quello delle sue incognite <Latex>{r`\\mathbf{x}`}</Latex>.\n </p>\n </Panel>\n <Panel title={\"Vincoli\"}>\n <p>\n Equazioni e disequazioni a cui devono sottostare le incognite perchè esse formino una soluzione valida.\n </p>\n <p>\n I loro coefficienti sono contenuti nella matrice <Latex>{r`\\mathbf{A}`}</Latex>, mentre i loro termini noti nel vettore <Latex>{r`\\mathbf{b}`}</Latex>.\n </p>\n </Panel>\n <Panel title={\"Valore ottimo\"}>\n <p>\n La <b>soluzione</b> di un problema, ricavabile dal prodotto <Latex>{r`\\mathbf{c}^T \\mathbf{x}`}</Latex>.\n </p>\n <p>\n Spesso, la funzione obiettivo è indicata con il nome <Latex>{r`z(\\dots)`}</Latex>.\n </p>\n </Panel>\n <Panel title={\"Poliedro\"}>\n <p>\n L'<b>insieme</b> che racchiunde tutte le <b>soluzioni ammissibili</b> di un problema.\n </p>\n <p>\n In particolare, il valore ottimo è un <b>vertice</b> del poliedro, detto <i>vertice ottimo</i>.\n </p>\n <p>\n Può essere <i><Finite/></i>, <i><Empty/></i> oppure <i><Unbounded/></i>.\n </p>\n </Panel>\n <Panel title={\"Gradiente\"}>\n <p>\n <b>Funzione</b> della funzione obiettivo che restituisce la direzione del suo aumento più veloce.\n </p>\n <p>\n <Latex>{r`\\nabla f = \\frac{\\delta f}{\\delta x_1} \\mathbf{I}_1 + \\frac{\\delta f}{\\delta x_2} \\mathbf{I}_2 + \\frac{\\delta f}{\\delta x_n} \\mathbf{I}_n`}</Latex>\n </p>\n <Example>\n La matrice <Latex>{r`\\mathbf{I}`}</Latex> è la matrice identità.\n </Example>\n <Example>\n Se la funzione obiettivo è <Latex>z = 2w + 3x + 4y</Latex>, il suo gradiente è <Latex>{r`\\nabla z = (2, 3, 4)`}</Latex>.\n </Example>\n </Panel>\n </Section>\n <Section title={\"Forme di un problema di ottimizzazione\"}>\n <Panel title={\"Forma generale\"}>\n <p>\n Un problema con:\n </p>\n <ul>\n <li><b>Equazioni e disequazioni</b></li>\n <li><b>Variabili non vincolate</b></li>\n </ul>\n <PLatex>{r`min \\left\\{ \\mathbf{c}^T \\mathbf{x} : \\mathbf{A} \\mathbf{x} = b,\\quad \\mathbf{A'} \\mathbf{x} \\geq \\mathbf{b'} \\quad x_j \\geq 0,\\quad j = 1 \\dots n \\right\\}`}</PLatex>\n </Panel>\n <Panel title={\"Forma canonica\"}>\n <p>\n Un problema con:\n </p>\n <ul>\n <li><b>Solo disequazioni</b></li>\n <li><b>Vincoli di non-negatività sulle incognite</b></li>\n </ul>\n <PLatex>{r`min \\left\\{ \\mathbf{c}^T \\mathbf{x} : \\mathbf{A} \\mathbf{x} \\geq b,\\quad x_j \\geq 0,\\quad j = 1 \\dots n \\right\\}`}</PLatex>\n </Panel>\n <Panel title={\"Forma standard\"}>\n <p>\n Un problema con:\n </p>\n <ul>\n <li><b>Solo equazioni</b></li>\n <li><b>Vincoli di non-negatività sulle incognite</b></li>\n </ul>\n <PLatex>{r`min \\left\\{ \\mathbf{c}^T \\mathbf{x} : \\mathbf{A} \\mathbf{x} = b,\\quad x_j \\geq 0,\\quad j = 1 \\dots n \\right\\}`}</PLatex>\n </Panel>\n </Section>\n <Section title={\"Conversioni tra le forme\"}>\n <Panel title={\"Standard e generale\"}>\n <p>\n Applica questa conversione a ogni equazione nel sistema:\n </p>\n <p>\n <Latex inline={false}>{r`a = b \\Leftrightarrow\n \\begin{cases}\n a \\leq b\\\\\n a \\geq b\n \\end{cases}\n `}</Latex>\n </p>\n <Example>Serve solo nella teoria per dimostrare che le forme sono equivalenti.</Example>\n </Panel>\n <Panel title={\"Canonica e standard\"}>\n <p>\n Aggiungi una <i>variabile slack</i> <Latex>{r`s`}</Latex> <b>non-vincolata</b> a ogni disequazione nel sistema:\n </p>\n <p>\n <Latex inline={false}>{r`\n a \\leq b \\Leftrightarrow a + s = b\n `}</Latex>\n </p>\n <p>\n <Latex inline={false}>{r`\n a \\geq b \\Leftrightarrow a - s = b\n `}</Latex>\n </p>\n </Panel>\n <Panel title={\"Generale e canonica\"}>\n <p>\n Sdoppia ogni variabile non-vincolata in due variabili con vincolo di non-negatività:\n </p>\n <p>\n <Latex inline={false}>{r`\\begin{cases}\n a = a^+ - a^-\\\\\n a^+ \\geq 0\\\\\n a^- \\geq 0\n \\end{cases}`}</Latex>\n </p>\n </Panel>\n </Section>\n <Section title={\"La forma standard\"}>\n <Panel title={\"Tableau\"}>\n <p>\n Un modo per rappresentare sistemi in forma standard, anche noto come <b>matrice equivalente completa</b> del sistema.\n </p>\n <Example>\n Il sistema:<br/><br/>\n <Latex inline={false}>{r`\n \\begin{cases}\n 2000x_1 + 1000x_2 = z\\\\\n 1x_1 \\leq 3\\\\\n 1x_2 \\leq 3\\\\\n 2x_1 + 2x_2 \\leq 7\n \\end{cases}\n `}</Latex><br/><br/>\n Diventa il tableau:<br/><br/>\n <table class={\"right\"}>\n <thead>\n <tr>\n <th><abbr title={\"Termine noto\"}>TN</abbr></th>\n <th><Latex>x_1</Latex></th>\n <th><Latex>x_2</Latex></th>\n <th><Latex>s_1</Latex></th>\n <th><Latex>s_2</Latex></th>\n </tr>\n </thead>\n <tbody>\n <tr>\n <td><Latex>z</Latex></td>\n <td><Latex>2000</Latex></td>\n <td><Latex>1000</Latex></td>\n <td><Latex>0</Latex></td>\n <td><Latex>0</Latex></td>\n </tr>\n <tr>\n <td><Latex>3</Latex></td>\n <td><Latex>1</Latex></td>\n <td><Latex>0</Latex></td>\n <td><Latex>1</Latex></td>\n <td><Latex>0</Latex></td>\n </tr>\n <tr>\n <td><Latex>3</Latex></td>\n <td><Latex>0</Latex></td>\n <td><Latex>1</Latex></td>\n <td><Latex>0</Latex></td>\n <td><Latex>1</Latex></td>\n </tr>\n <tr>\n <td><Latex>7</Latex></td>\n <td><Latex>2</Latex></td>\n <td><Latex>2</Latex></td>\n <td><Latex>0</Latex></td>\n <td><Latex>0</Latex></td>\n </tr>\n </tbody>\n </table>\n </Example>\n </Panel>\n <Panel title={\"Variabili nella base\"}>\n <p>\n Variabili che hanno <b>tutti 0 e un solo 1</b> nella loro colonna del tableau.\n </p>\n <p>\n La loro controparte sono le <i>variabili fuori base</i>, che hanno qualsiasi altro valore.\n </p>\n </Panel>\n </Section>\n <Section title={\"Simplex primale\"}>\n <Panel title={\"Cos'è?\"}>\n <p>\n Un algoritmo per <Min>minimizzare</Min>/<Max>massimizzare</Max> trovare efficientemente <b>valore ottimo</b> di problemi di ottimizzazione lineare, derivato da Gauss-Jordan.\n </p>\n <p>\n Da esso si può anche ricavare un <b>vertice ottimo ammissibile</b>.<br/>\n C'è la possibilità che ne esistano anche altri: quello ottenuto dipende da come è stata effettuata la scelta delle variabili entranti.\n </p>\n <Example>\n E' spiegato in modo semplice <a href={\"https://web.archive.org/web/20200523052252/https://www.cs.cmu.edu/~15451-f17/handouts/simplex.pdf\"}>qui</a>, e ci sono dei codici sorgenti di esempio <a href={\"https://www.cs.cmu.edu/~15451-f17/handouts/simplexcodes/\"}>qui</a>.\n </Example>\n <Example title={\"Esempio\"}>\n <p>\n <a href={\"https://i.imgur.com/1r405Mb.jpg\"}>Questa</a> è la soluzione passo per passo del problema 3 del file <a href={\"https://dolly.fim.unimore.it/2019/mod/resource/view.php?id=2716\"}><code>Ex_LP_testo</code></a>.\n </p>\n </Example>\n </Panel>\n <Panel title={\"I passi\"}>\n <ol>\n <li>Trasforma il sistema in <b>forma standard</b>.</li>\n <li>Trova tante variabili <b>linearmente indipendenti</b> quante siano le righe: esse saranno la <i>base iniziale</i>.</li>\n <li>Finchè ci sono variabili con coefficienti <Min>positivi</Min>/<Max>negativi</Max> nella funzione obiettivo:\n <ol>\n <li>\n <b>Scegli</b> la prima variabile fuori base con coefficiente <Min>positivo</Min>/<Max>negativo</Max> nella funzione obiettivo: essa è la <i>variabile entrante</i>.<br/>\n <aside><i>Regola di Bland</i>: Si potrebbe scegliere qualsiasi variabile come entrante, ma scegliendo sempre la prima ammissibile ci si assicura che l'algoritmo termini.</aside>\n </li>\n <li>\n <b>Scegli</b> la variabile in base con il minor rapporto positivo <Latex>{r`\\frac{termine\\ noto}{coeff.\\ variabile\\ entrante}`}</Latex>.\n <aside>Se non sei riuscito a trovare nessuna variabile con un rapporto positivo, significa che il poliedro è <Unbounded/>.</aside>\n </li>\n <li><u>Pivot</u>: <b>riscrivi</b> tutte le funzioni del sistema in termini della variabile entrante.</li>\n </ol>\n </li>\n <li>Il poliedro è <Finite/>: i <b>termini noti dei vincoli</b> sono le coordinate del suo vertice ottimo, mentre il <b>termine noto della funzione obiettivo</b> è il valore ottimo.</li>\n </ol>\n <Example>\n È praticamente l'algoritmo di Gauss-Jordan applicato al tableau, con delle regole aggiuntive per la decisione delle variabili di pivot.\n </Example>\n </Panel>\n <Panel title={\"Soluzioni di base degenerata\"}>\n <p>\n Una soluzione con almeno una variabile di valore <Latex>0</Latex>, dovuta a uno o più <b>vincoli ridondanti</b>.\n </p>\n <p>\n Senza <b>Regola di Bland</b> e in presenza di vincoli ridondanti si rischia di trovarsi a fare pivot infiniti.\n </p>\n </Panel>\n </Section>\n <Section title={\"Metodo delle due fasi\"}>\n <Panel title={\"Metodo delle due fasi\"}>\n <p>\n Un estensione del Simplex per permettere la risoluzione di problemi la cui origine non è una soluzione ammissibile.\n </p>\n <p>\n Prevede l'introduzione di un <i>problema ausiliario</i>, le cui incognite sono dette <i>artificiali</i>.\n </p>\n <p>\n Il vettore delle incognite artificiali è solitamente chiamato <Latex>{r`\\mathbf{y}`}</Latex>.\n </p>\n <Example>\n E' spiegato in modo semplice <a href={\"https://web.archive.org/web/20200523052252/https://www.cs.cmu.edu/~15451-f17/handouts/simplex.pdf\"}>qui</a>.\n </Example>\n </Panel>\n <Panel title={\"Procedimento\"}>\n <ol>\n <li>Crea un nuovo tableau, <b>aggiungendo variabili artificiali</b> in modo da avere una base ammissibile.</li>\n <li>Sostituisci la vecchia funzione obiettivo con una nuova che <b>minimizzi la somma</b> di tutte le variabili artificiali.</li>\n <li><u>Fase 1</u>: <b>Risolvi</b> il nuovo problema con il simplex primale.</li>\n <li>Se il Simplex termina quando ci sono ancora <b>variabili artificiali nella base</b>, allora il poliedro è <b><Empty/></b>.</li>\n <li>Una volta che le variabili artificiali sono fuori base, <b>elimina</b> le loro colonne e la nuova funzione obiettivo.<br/></li>\n <li>Riporta il tableau in forma base compiendo operazioni per <b>azzerare i coefficienti</b> delle variabili di base nella funzione obiettivo.</li>\n <li><u>Fase 2</u>: <b>Risolvi</b> il tableau con il simplex primale.</li>\n </ol>\n </Panel>\n </Section>\n <Section title={\"Rilassamento\"}>\n <Panel title={\"Cos'è?\"}>\n <p>\n Una versione semplificata di un problema nella quale si <b>ignora la violazione</b> di uno o più vincoli.\n </p>\n </Panel>\n <Panel title={\"Rilassamento di Lagrange\"}>\n <p>\n Un rilassamento che permette di misurare <b>di quanto i vincoli vengono violati</b>.\n </p>\n <p>\n I vincoli, moltiplicati per <b>coefficienti di rilassamento</b>, vengono inseriti nella funzione obiettivo.\n </p>\n <p>\n Il vettore dei coefficienti di rilassamento solitamente è indicato con <Latex>{r`\\mathbf{u}`}</Latex>.\n </p>\n <Example>\n <p>\n Il sistema:\n </p>\n <Latex inline={false}>{r`\n \\begin{cases}\n z = 3 x_1 + 5 x_2\\\\\n 2 x_1 + 3 x_2 \\geq 12\\\\\n - x_1 + 3 x_2 \\geq 3\\\\\n x_1 \\geq 0\\\\\n x_2 \\geq 0\n \\end{cases}\n `}</Latex>\n <p>\n diventa:\n </p>\n <Latex inline={false}>{r`\n \\begin{cases}\n z = 3 x_1 + 5 x_2 + u_1 ( 12 - 2 x_1 - 3 x_2 ) + u_2 ( 3 + x_1 - 3 x_2 )\\\\\n x_1 \\geq 0\\\\\n x_2 \\geq 0\n \\end{cases}\n `}</Latex>\n </Example>\n </Panel>\n </Section>\n <Section title={\"Dualità\"}>\n <Panel title={\"Duale\"}>\n <p>\n Il sistema che <b><Min>massimizza</Min>/<Max>minimizza</Max> i moltiplicatori di rilassamento</b> di un problema detto <i>primale</i>.\n </p>\n </Panel>\n <Panel title={\"In termini matriciali\"}>\n <p>\n Possiamo <b>trasporre</b> il tableau e sostituire le variabili <Latex>{r`x_n`}</Latex> con variabili <Latex>{r`u_n`}</Latex> per ottenere il sistema duale!\n </p>\n <p>\n I maggiori e minori dei vincoli diventeranno maggiori e minori delle variabili e viceversa.\n </p>\n </Panel>\n <Panel title={\"Feasibility del duale\"}>\n <ul>\n <li>Se un problema ha una <b>soluzione finita</b>, allora anche il suo duale la avrà.</li>\n <li>Se un problema è <b><Empty/></b>, allora il suo duale potrà essere <Empty/> oppure <Unbounded/>.</li>\n <li>Se un problema è <b><Unbounded/></b>, allora il suo duale sarà certamente <Empty/>.</li>\n </ul>\n </Panel>\n </Section>\n <Section title={\"Un po' di teoria\"}>\n <Panel title={\"Lemma di Farkas\"}>\n <p>\n Una disuguaglianza lineare <Latex>{r`c_0 \\leq \\mathbf{c}^T \\mathbf{x}`}</Latex> è verificata da tutti i punti di un poliedro non-<Empty/> se e solo se esiste un vettore <Latex>{r`u \\in \\mathfrak{R}^m`}</Latex> tale che:\n </p>\n <PLatex>{r`\\mathbf{c}^T \\geq \\mathbf{u}^T \\mathbf{A}`}</PLatex>\n <PLatex>{r`c_0 \\leq \\mathbf{u}^T \\mathbf{b}`}</PLatex>\n <p>\n <Todo>TODO: Cioè?</Todo>\n </p>\n </Panel>\n <Panel title={\"Dualità forte\"}>\n <p>\n Il teorema che dimostra l'equivalenza tra primale e duale.\n </p>\n <p>\n Se uno dei due problemi è finito, la soluzione di uno coincide con la soluzione dell'altro.\n </p>\n <p>\n <Latex>{r`\\mathbf{c}^T \\mathbf{x} = \\mathbf{u}^T \\mathbf{b}`}</Latex>\n </p>\n <p>\n <Todo>TODO: Anche qui c'è una lunga dimostrazione...</Todo>\n </p>\n </Panel>\n <Panel title={\"Dualità debole\"}>\n <p>\n Il teorema che dimostra che il valore della funzione obiettivo del duale (di un qualsiasi tableau) è sempre <Min>minore o uguale</Min>/<Max>maggiore o uguale</Max> alla soluzione del corrispettivo primale.\n </p>\n <p>\n <Todo>TODO: Dimostrazione cortina, ma sembra complicata.</Todo>\n </p>\n </Panel>\n <Panel title={\"Condizioni di ottimalità\"}>\n <p>\n Il teorema che ci permette di passare dalla soluzione del duale alla soluzione del primale. <Todo>TODO: credo?</Todo>\n </p>\n <p>\n Si deriva combinando le seguenti condizioni:\n </p>\n <ul>\n <li>Ammissibilità del primale: <Latex>{r`\\mathbf{A} \\mathbf{X} \\geq \\mathbf{b}, \\quad \\mathbf{x} \\geq 0`}</Latex></li>\n <li>Ammissibilità del duale: <Latex>{r`\\mathbf{u}^T \\mathbf{A} \\leq \\mathbf{c}^T, \\quad \\mathbf{u} \\geq 0`}</Latex></li>\n <li>Teorema della dualità forte: <Latex>{r`\\mathbf{c}^T \\mathbf{x} = \\mathbf{u}^T \\mathbf{b}`}</Latex> (alla soluzione ottima)</li>\n </ul>\n <p>\n Ne risulta che una soluzione è ottima se e solo se:\n </p>\n <PLatex>{r`\\left( \\mathbf{c}^T - \\mathbf{u}^T \\mathbf{A} \\right) \\mathbf{x} = 0`}</PLatex>\n <PLatex>{r`\\mathbf{u}^T \\left( \\mathbf{A} \\mathbf{x} - \\mathbf{b} \\right) = 0`}</PLatex>\n </Panel>\n </Section>\n <Section title={\"Simplex duale\"}>\n <Panel title={\"Cos'è?\"}>\n <p>\n Un'estensione al Simplex primale che opera sul problema duale.\n </p>\n </Panel>\n <Panel title={\"Come funziona?\"}>\n <p>\n Funziona esattamente come il Simplex primale, ma opera sulle righe invece che sulle colonne, cercando di rendere <Min>positivi</Min>/<Max>negativi</Max> tutti i termini noti.\n </p>\n <Example>\n Significa che si possono moltiplicare tutti i valori di una riga per lo stesso numero e il risultato non cambia...?\n </Example>\n </Panel>\n </Section>\n <Section title={\"Analisi di sensibilità\"}>\n <Panel title={\"Cos'è?\"}>\n <p>\n Un procedimento che misura di <b>quanto può variare</b> il termine noto di un vincolo <Latex>{r`b_i`}</Latex> o il coefficiente della funzione obiettivo <Latex>{r`c_i`}</Latex> prima che la base degeneri. <Todo>TODO: verificare</Todo>\n </p>\n </Panel>\n </Section>\n </div>\n )\n}\n","// extracted by mini-css-extract-plugin\nmodule.exports = {\"splitparent\":\"splitparent__3-wBs\",\"splitchild\":\"splitchild__begkX\"};","import style from \"./Panel.less\";\nimport Box from \"./Box\";\n\nexport default function(props) {\n\treturn (\n\t\t<Box color={props.color}>\n\t\t\t<h3 class={style.title}>\n\t\t\t\t{props.title}\n\t\t\t</h3>\n\t\t\t<div class={style.contents}>\n\t\t\t\t{props.children}\n\t\t\t</div>\n\t\t</Box>\n\t);\n}\n","import {createContext} from \"preact\";\n\nexport default createContext(true);\n","import Latex, {LatexDisplay} from \"./Latex\";\n\nexport default function (props) {\n return (\n <Latex inline={false} display={LatexDisplay.BLOCK}>{props.children}</Latex>\n );\n}\n"],"sourceRoot":""}
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