捕鱼机专用卡怎么调

本書以數學史上四大著名的“古代問題”：化圓為方、三等分角、倍立方、作圓內接正多邊形為基礎，展現了兩千多年來，數學家們為解決這些問題而留下的令人拍案叫絕的思想與成就。尺規作圖“不可能”解決的問題成為歐幾里得、笛卡兒、牛頓和高斯等數學巨擘攀登數學高峰的階梯，其解決方法也延伸至整個數學領域，眾多重大數學發現皆與它們息息相關。這段探索之旅將讀者從古典時期引領到今天，縱觀兩千年來這四個無法解決的問題如何引導、啟發人們數學思維的發展，并發掘了數學史中的種種細節。本書適合對數學及數學史感興趣的讀者閱讀。

·22萬字

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圖解數學簡史：數學世界中不可不知的100個重大突破

數學無所不在，它是日常生活中不可或缺的部分，并支撐著世界上所有的基本規律，從美麗的大自然到令人驚訝的對稱性技術，無不推動著未來的發展。雖然數學的基本邏輯同宇宙一樣古老，但人類直到近代才理解這個復雜的學科。那我們是如何發現數學理論并飛躍發展的呢？本書將告訴讀者數學領域的100個重大突破。書中以故事的形式，講述你最需要知道的且最重要的數學基本概念。從數學最初的“生命火花”——計數來探索我們的進步，通過古老的幾何形狀、經典悖論、邏輯代數、虛數、分形、相對論和形態彎曲等難題，淋漓盡致地為大家展示了奇妙的數學世界。上百張精美的照片和富有啟發性的圖表，將為你展示數學這門極為重要學科的100個里程碑，以及如何深遠地影響我們的生活。每個故事都是4頁，其中1頁全彩圖，3頁文字內容，結構清晰明了。

·19.7萬字

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美妙的數學（插圖珍藏版）

本書以數學實例揭示數學潛在的規律，同時探索用美學原理指導數學創造和發現的途徑。內容包括：數，科學的語言；形，數的伴侶；數與形，相得益彰；曲線，大自然的寫真；抽象，數學的靈魂；無窮，艱難的旅程。

·14字

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錢敏數學文選

本書收錄了《馬爾可夫半群的不變測度與遍歷性》《非自治系統的不變圈（解流形）分支》《MinimalCoupledDiffusionProcess》《GeneralizedWeylTransformation》等文章。

·0字

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你沒想到的數學

本書討論了一些源自日常生活的數學問題，用數學思維和計算機思維，講解了巧妙的解題思路。一個個看似簡單的問題，細究后卻發現別有洞天。本書會帶領讀者一起來到數學研究的前沿陣地，享受思考的樂趣，感受數學的奧妙。讀者在探究問題的過程中，可以學習和培養巧妙的數學思維和計算機思維，靈活應用知識，用四兩撥千斤之巧力去解決生活、學習以及工程問題。本書是一本標新立異又具有思想深度的思維訓練書，適合理工科專業的本科生、研究生，以及對數學、計算機有興趣的讀者閱讀。

·6.3萬字

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燒掉數學書：重新發明數學

《燒掉數學書》是一本全新概念的數學科普。這本書的一大特點是拋開傳統晦澀的數學符號和講述方式，另起爐灶，從零開始，用年輕人易于接受的語言闡釋高深的數學知識和概念。這本書打破了數學教育界認為在講授微積分之前必須花大量時間和精力學習微積分的嚴格化基礎的慣例，從理解微積分本身的用途和方法著手，反過來再提出微積分基礎嚴格化的問題，從而順理成章地引出極限和逼近等概念。這種方法更符合人們的學習和認知規律，讓人能自然而然地接受和理解這些抽象的概念和技巧的源流和必要性，從而為深入的學習打下好的基礎。

·21.7萬字

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寫給青少年的數學故事（下）：幾何妙想

幾何是數學學習的基礎之一，借助幾何學，我們能搭建房屋、丈量土地、觀測星空，還能設計滑梯、裝飾地板……連一副小小的七巧板都能催生出眾多數學成果。本書從建筑、測量、圖形游戲等角度講述了有趣的幾何小故事，不僅涉及直線形、圓、非圓曲線、立體幾何等基礎幾何學知識，而且加入了圖論、拓撲、組合幾何、非歐幾何等主題，“擴大”了美妙的幾何世界。本書闡釋了幾何學知識，同時介紹了古今中外關于幾何的逸聞趣事，展現了圖與形的自然之美。本書尤其適合小學高年級學生和中學生閱讀。

·10.3萬字

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武俠數學

石器時代的原始人怎樣數數？零和阿拉伯數字是怎樣產生并傳入中國的？古人怎樣理解小數和負數？祖沖之用什么工具推算圓周率？數學的推算有什么實際功能，能帶來什么樣的樂趣？古代中國的數學在當時世界上有何獨特之處，與現代數學課堂有哪些不同？這些問題，都可以由郭靖、黃蓉、楊過、小龍女等武俠人物來作答。鑒于計算機編程方興未艾，許多省份的高考數學和中考數學試卷都將編程納入考點，本書里也有一些用計算機編程解決傳統數學問題的示例，讓沒有接觸過編程的讀者初步了解程序思維的妙用。

·8.8萬字

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不焦慮的數學：孩子怎么學，家長怎么教

本書講述了小學和初中階段數學學習法、學習習慣和解題思路，針對計算能力提升、知識難點講解、數學思想應用和培養，為小學和初中階段家長提升家庭輔助教育水平，以及初中學生實現自學與自練，提供了切實可行、容易上手的方法和思路，解決數學學習和教育中的種種困難，讓大家不再盲從和焦慮。本書適合小學和初中階段的家長和數學教師閱讀，亦可作為學生本人提升數學水平的指導。

·18.1萬字

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Digital Forensics with Kali Linux

Thisbookistargetedatforensicsanddigitalinvestigators,securityanalysts,oranystakeholderinterestedinlearningdigitalforensicsusingKaliLinux.BasicknowledgeofKaliLinuxwillbeanadvantage.

·3.6萬字

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Hands-On Blockchain with Hyperledger

BBlockchainandHyperledgertechnologiesarehottopicstoday.HyperledgerFabricandHyperledgerComposerareopensourceprojectsthathelporganizationscreateprivate,permissionedblockchainnetworks.Thesefindapplicationinfinance,banking,supplychain,andIoTamongseveralothersectors.ThisbookwillbeaneasyreferencetoexploreandbuildblockchainnetworksusingHyperledgertechnologies.Thebookstartsbyoutliningtheevolutionofblockchain,includinganoverviewofrelevantblockchaintechnologies.YouwilllearnhowtoconfigureHyperledgerFabricandbecomefamiliarwithitsarchitecturalcomponents.Usingthesecomponents,youwilllearntobuildprivateblockchainnetworks,alongwiththeapplicationsthatconnecttothem.Startingfromprinciplesfirst,you’lllearntodesignandlaunchanetwork,implementsmartcontractsinchaincodeandmuchmore.Bytheendofthisbook,youwillbeabletobuildanddeployyourowndecentralizedapplications,handlingthekeypainpointsencounteredintheblockchainlifecycle.

·10.8萬字

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Blockchain Quick Reference

BlockchainQuickReferencetakesyouthroughtheelectrifyingworldofblockchaintechnologyandisdesignedforthosewhowanttopolishtheirexistingknowledgeregardingthevariouspillarsoftheblockchainecosystem.Thisbookisyourgo-toguide,teachingyouhowtoapplyprinciplesandideasformakingyourlifeandbusinessbetter.Youwillcoverthearchitecture,InitialCoinOfferings(ICOs),tokens,smartcontracts,andterminologiesoftheblockchaintechnology,beforestudyinghowtheywork.Allyouneedisacuriousmindtogetstartedwithblockchaintechnology.Onceyouhavegraspedthebasics,youwillexplorecomponentsofEthereum,suchasethertokens,transactions,andsmartcontracts,inordertobuildsimpleDapps.YouwillthenmoveontolearningwhySolidityisusedspecificallyforEthereum-basedprojects,followedbyexploringdifferenttypesofblockchainwitheasy-to-followexamples.Allthiswillhelpyoutacklechallengesandproblems.Bytheendofthisbook,youwillnotonlyhavesolvedcurrentandfutureproblemsrelatingtoblockchaintechnologybutwillalsobeabletobuildefficientdecentralizedapplications.

·7.9萬字

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The Modern C# Challenge

C#isamulti-paradigmprogramminglanguage.TheModernC#Challengecoverswithaspectsofthe.NETFrameworksuchastheTaskParallelLibrary(TPL)andCryptoAPI.Italsoencouragesyoutoexploreimportantprogrammingtrade-offssuchastimeversusspaceorsimplicity.Theremaybemanywaystosolveaproblemandthereisoftennosinglerightway,butsomesolutionsaredefinitelybetterthanothers.Thisbookhascombinedthesesolutionstohelpyousolvereal-worldproblemswithC#.Inadditiontodescribingprogrammingtrade-offs,TheModernC#Challengewillhelpyoubuildausefultoolkitoftechniquessuchasvaluecaching,statisticalanalysis,andgeometricalgorithms.Bytheendofthisbook,youwillhavewalkedthroughchallengesinC#andexploredthe.NETFrameworkinordertodevelopprogramlogicforreal-worldapplications.

·7.7萬字

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Blockchain Developer's Guide

Blockchainapplicationsprovideasingle-sharedledgertoeliminatetrustissuesinvolvingmultiplestakeholders.ItisthemaintechnicalinnovationofBitcoin,whereitservesasthepublicledgerforBitcointransactions.BlockchainDeveloper'sGuidetakesyouthroughtheelectrifyingworldofblockchaintechnology.Itbeginswiththebasicdesignofablockchainandelaboratesconcepts,suchasInitialCoinOfferings(ICOs),tokens,smartcontracts,andotherrelatedterminologies.YouwillthenexplorethecomponentsofEthereum,suchasEthertokens,transactions,andsmartcontractsthatyouneedtobuildsimpleDApps.BlockchainDeveloper'sGuidealsoexplainswhyyoumustspecificallyuseSolidityforEthereum-basedprojectsandletsyouexploredifferentblockchainswitheasy-to-followexamples.Youwilllearnawiderangeofconcepts-beginningwithcryptographyincryptocurrenciesandincludingethersecurity,mining,andsmartcontracts.YouwilllearnhowtousewebsocketsandvariousAPIservicesforEthereum.BytheendofthisLearningPath,youwillbeabletobuildefficientdecentralizedapplications.ThisLearningPathincludescontentfromthefollowingPacktproducts:BlockchainQuickReferencebyBrennHill,SamanyuChopra,PaulValencourt.BuildingBlockchainProjectsbyNarayanPrusty.

·12.5萬字

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Blockchain for Business 2019

BlockchainforBusiness2019isacomprehensiveguidethatenablesyoutobringinvariousblockchainfunctionalitiestoextendyourexistingbusinessmodelsandmakecorrectfully-informeddecisions.Youwilllearnhowdecentralizedapplicationsaretransformingnumerousbusinesssectorsthatareexpectedtoplayahugeroleinthefuture.Youwillseehowlargecorporationsarealreadyimplementingblockchaintechnologynow.Youwillthenlearnaboutthevariousblockchainservices,suchasBitcoin,Ethereum,Hyperledger,andotherstounderstandtheirusecasesinavarietyofbusinessdomains.Youwilldevelopasolidfundamentalunderstandingofblockchainarchitecture.Movingahead,youwillgettogripswiththeinnerworkingsofblockchain,withdetailedexplanationsofmining,decentralizedconsensus,cryptography,smartcontracts,andmanyotherimportantconcepts.Youwilldelveintoarealisticviewofthecurrentstateofblockchaintechnology,alongwithitsissues,limitations,andpotentialsolutionsthatcantakeittothenextlevel.Bytheendofthisbook,youwillallbewellversedinthelatestinnovationsanddevelopmentsintheemergingblockchainspace.

·6萬字

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Hands-On Blockchain for Python Developers

Blockchainisseenasthemaintechnologicalsolutionthatworksasapublicledgerforallcryptocurrencytransactions.Thisbookservesasapracticalguidetodevelopingafull-fledgeddecentralizedapplicationwithPythontointeractwiththevariousbuildingblocksofblockchainapplications.Hands-OnBlockchainforPythonDevelopersstartsbydemonstratinghowblockchaintechnologyandcryptocurrencyhashingworks.Youwillunderstandthefundamentalsandbenefitsofsmartcontractssuchascensorshipresistanceandtransactionaccuracy.Asyousteadilyprogress,you'llgoontobuildsmartcontractsusingVyper,whichhasasimilarsyntaxtoPython.Thisexperiencewillfurtherhelpyouunraveltheotherbenefitsofsmartcontracts,includingreliablestorageandbackup,andefficiency.You'llalsouseweb3.pytointeractwithsmartcontractsandleveragethepowerofboththeweb3.pyandPopulusframeworktobuilddecentralizedapplicationsthatoffersecurityandseamlessintegrationwithcryptocurrencies.Asyouexplorelaterchapters,you'lllearnhowtocreateyourowntokenontopofEthereumandbuildacryptocurrencywalletgraphicaluserinterface(GUI)thatcanhandleEthereumandEthereumRequestforComments(ERC-20)tokensusingthePySide2library.Thiswillenableuserstoseamlesslystore,send,andreceivedigitalmoney.Towardtheend,you'llimplementInterPlanetaryFileSystem(IPFS)technologyinyourdecentralizedapplicationtoprovideapeer-to-peerfilesystemthatcanstoreandexposemedia.Bytheendofthisbook,you'llbewell-versedinblockchainprogrammingandbeabletobuildend-to-enddecentralizedapplicationsonarangeofdomainsusingPython.

·8.8萬字

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Improving your C# Skills

ThisLearningPathshowsyouhowtocreatehighperformingapplicationsandsolveprogrammingchallengesusingawiderangeofC#features.You’llbeginbylearninghowtoidentifythebottlenecksinwritingprograms,highlightcommonperformancepitfalls,andapplystrategiestodetectandresolvetheseissuesearly.You'llalsostudytheimportanceofmicro-servicesarchitectureforbuildingfastapplicationsandimplementingresiliencyandsecurityin.NETCore.Then,you'llstudytheimportanceofdefiningandtestingboundaries,abstractingawaythird-partycode,andworkingwithdifferenttypesoftestdouble,suchasspies,mocks,andfakes.Inadditiontodescribingprogrammingtrade-offs,thisLearningPathwillalsohelpyoubuildausefultoolkitoftechniques,includingvaluecaching,statisticalanalysis,andgeometricalgorithms.ThisLearningPathincludescontentfromthefollowingPacktproducts:C#7and.NETCore2.0HighPerformancebyOvaisMehboobAhmedKhan.PracticalTest-DrivenDevelopmentusingC#7byJohnCallaway,ClaytonHunt.TheModernC#ChallengebyRodStephens.

·12萬字

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Hyperledger Cookbook

Hyperledgerisanopen-sourceprojectandcreatesprivateblockchainapplicationsforarangeofdomains.Thisbookwillbeyourdeskreferenceasyouexplorecommonandnot-so-commonchallengesfacedwhilebuildingblockchainnetworksusingHyperledgerservices.We'llworkthroughallHyperledgerplatformmodulestounderstandtheirservicesandfeaturesandbuildend-to-endblockchainapplicationsusingvariousframeworksandtoolssupportedbyHyperledger.Thisbook'sindependent,recipe-basedapproach(packedwithreal-worldexamples)willfamiliarizeyouwiththeblockchaindevelopmentcycle.Frommodelingabusinessnetworktointegratingwithvarioustools,youwillcoveritall.We'llcovercommonandnot-so-commonchallengesfacedintheblockchainlifecycle.Later,we'lldelveintohowwecaninteractwiththeHyperledgerFabricblockchain,coveringalltheprinciplesyouneedtomaster,suchaschaincode,smartcontracts,andmuchmore.We'llalsoaddressthescalabilityandsecurityissuescurrentlyfacedinblockchaindevelopment.Bytheendofthisbook,youwillbeabletoimplementeachrecipetoplan,design,andcreateafull-fledged,private,decentralizedapplicationtomeetorganizationalneeds.

·4.9萬字

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Mastering Ethereum

Ethereumisoneofthecommonlyusedplatformsforbuildingblockchainapplications.It'sadecentralizedplatformforapplicationsthatcanrunexactlyasprogrammedwithoutbeingaffectedbyfraud,censorship,orthird-partyinterference.Thisbookwillgiveyouadeepunderstandingofhowblockchainworkssothatyoucandiscovertheentireecosystem,corecomponents,anditsimplementations.YouwillgetstartedbyunderstandinghowtoconfigureandworkwithvariousEthereumprotocolsfordevelopingdApps.Next,youwilllearntocodeandcreatepowerfulsmartcontractsthatscalewithSolidityandVyper.YouwillthenexplorethebuildingblocksofthedAppsarchitecture,andgaininsightsonhowtocreateyourowndAppthroughavarietyofreal-worldexamples.ThebookwillevenguideyouonhowtodeployyourdAppsonmultipleEthereuminstanceswiththerequiredbestpracticesandtechniques.Thenextfewchapterswilldelveintoadvancedtopicssuchas,buildingadvancedsmartcontractsandmulti-pagefrontendsusingEthereumblockchain.Youwillalsofocusonimplementingmachinelearningtechniquestobuilddecentralizedautonomousapplications,inadditiontocoveringseveralusecasesacrossavarietyofdomainssuchas,socialmediaande-commerce.Bytheendofthisbook,youwillhavetheexpertiseyouneedtobuilddecentralizedautonomousapplicationsconfidently.

·10.3萬字

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Advanced Blockchain Development

Blockchaintechnologyisadistributedledgerwithapplicationsinindustriessuchasfinance,government,andmedia.ThisLearningPathisyourguidetobuildingblockchainnetworksusingEthereum,JavaScript,andSolidity.Youwillgetstartedbyunderstandingthetechnicalfoundationsofblockchaintechnology,includingdistributedsystems,cryptographyandhowthisdigitalledgerkeepsdatasecure.Furtherintothechapters,you’llgaininsightsintodevelopingapplicationsusingEthereumandHyperledger.AsyoubuildonyourknowledgeofEthersecurity,mining,smartcontracts,andSolidity,you’lllearnhowtocreaterobustandsecureapplicationsthatrunexactlyasprogrammedwithoutbeingaffectedbyfraud,censorship,orthird-partyinterference.Towardtheconcludingchapters,you’llexplorehowblockchainsolutionscanbeimplementedinapplicationssuchasIoTapps,inadditiontoitsuseincurrencies.TheLearningPathwillalsohighlighthowyoucanincreaseblockchainscalabilityandevendiscussesthefuturescopeofthisfascinatingandpowerfultechnology.BytheendofthisLearningPath,you'llbeequippedwiththeskillsyouneedtotacklepainpointsencounteredintheblockchainlifecycleandconfidentlydesignanddeploydecentralizedapplications.ThisLearningPathincludescontentfromthefollowingPacktproducts:MasteringBlockchain-SecondEditionbyImranBashir.BuildingBlockchainProjectsbyNarayanPrusty.

·13.2萬字

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不可能的幾何挑戰：數學求索兩千年

圖解數學簡史：數學世界中不可不知的100個重大突破

美妙的數學（插圖珍藏版）

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你沒想到的數學

燒掉數學書：重新發明數學

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武俠數學

不焦慮的數學：孩子怎么學，家長怎么教

Digital Forensics with Kali Linux

Hands-On Blockchain with Hyperledger

Blockchain Quick Reference

The Modern C# Challenge

Blockchain Developer's Guide

Blockchain for Business 2019

Hands-On Blockchain for Python Developers

Improving your C# Skills

Hyperledger Cookbook

Mastering Ethereum

Advanced Blockchain Development