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Mathematics of Program Construction: 14th International Conference, MPC 2022, Tbilisi, Georgia, September 26–28, 2022, Proceedings (Lecture Notes in Computer Science, 13544) PDF

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Preview Mathematics of Program Construction: 14th International Conference, MPC 2022, Tbilisi, Georgia, September 26–28, 2022, Proceedings (Lecture Notes in Computer Science, 13544)

Ekaterina Komendantskaya (Ed.) 4 4 5 3 Mathematics 1 S C of Program Construction N L 14th International Conference, MPC 2022 Tbilisi, Georgia, September 26–28, 2022 Proceedings Lecture Notes in Computer Science 13544 FoundingEditors GerhardGoos KarlsruheInstituteofTechnology,Karlsruhe,Germany JurisHartmanis CornellUniversity,Ithaca,NY,USA EditorialBoardMembers ElisaBertino PurdueUniversity,WestLafayette,IN,USA WenGao PekingUniversity,Beijing,China BernhardSteffen TUDortmundUniversity,Dortmund,Germany MotiYung ColumbiaUniversity,NewYork,NY,USA Moreinformationaboutthisseriesathttps://link.springer.com/bookseries/558 Ekaterina Komendantskaya (Ed.) Mathematics of Program Construction 14th International Conference, MPC 2022 Tbilisi, Georgia, September 26–28, 2022 Proceedings Editor EkaterinaKomendantskaya SchoolofMathematicalandComputerSciences Heriot-WattUniversity Edinburgh,UK ISSN 0302-9743 ISSN 1611-3349 (electronic) LectureNotesinComputerScience ISBN 978-3-031-16911-3 ISBN 978-3-031-16912-0 (eBook) https://doi.org/10.1007/978-3-031-16912-0 ©TheEditor(s)(ifapplicable)andTheAuthor(s),underexclusivelicense toSpringerNatureSwitzerlandAG2022 Chapter“CalculatingDatastructures”islicensedunderthetermsoftheCreativeCommonsAttribution4.0 InternationalLicense(http://creativecommons.org/licenses/by/4.0/).Forfurtherdetailsseelicenseinformation inthechapter. Thisworkissubjecttocopyright.AllrightsarereservedbythePublisher,whetherthewholeorpartofthe material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storageandretrieval,electronicadaptation,computersoftware,orbysimilarordissimilarmethodologynow knownorhereafterdeveloped. Theuseofgeneraldescriptivenames,registerednames,trademarks,servicemarks,etc.inthispublication doesnotimply,evenintheabsenceofaspecificstatement,thatsuchnamesareexemptfromtherelevant protectivelawsandregulationsandthereforefreeforgeneraluse. Thepublisher,theauthors,andtheeditorsaresafetoassumethattheadviceandinformationinthisbookare believedtobetrueandaccurateatthedateofpublication.Neitherthepublishernortheauthorsortheeditors give a warranty, expressed or implied, with respect to the material contained herein or for any errors or omissionsthatmayhavebeenmade.Thepublisherremainsneutralwithregardtojurisdictionalclaimsin publishedmapsandinstitutionalaffiliations. ThisSpringerimprintispublishedbytheregisteredcompanySpringerNatureSwitzerlandAG Theregisteredcompanyaddressis:Gewerbestrasse11,6330Cham,Switzerland Preface Welcome to the proceedings of the 14th International Conference on Mathematics of ProgramConstruction—MPC2022! The International Conference on Mathematics of Program Construction (MPC) aims to promote the development of mathematical principles and techniques that are demonstrablypracticalandeffectiveintheprocessofconstructingcomputerprograms. Topics of interest range from algorithmics to support for program construction in programming languages and systems. Typical areas include type systems, program analysis and transformation, programming language semantics, security, and program logics. The notion of a ‘program’ is interpreted broadly, ranging from algorithms to hardware. MPC 2022 welcomes theoretical contributions with relevance to the methods of program construction, reports on applications with solid mathematical basis, and programmingpearlsthatpresentelegantandinstructiveexamplesofthemathematicsof programconstruction. The MPC series is a bi-annual conference; previous editions took place in Porto, Portugal (2019); Königswinter, Germany (2015); Madrid, Spain (2012); Québec City, Canada (2010); Marseille, France (2008); Kuressaare, Estonia (2006); Stirling, UK (2004); Dagstuhl, Germany (2002); Ponte de Lima, Portugal (2000); Marstrand, Sweden(1998);KlosterIrsee,Germany(1995);Oxford,UK(1992);andTwente,The Netherlands(1989). The14thinstallmentoftheconferencewascolocatedwiththeComputationalLogic AutumnSummitof2022(CLAS2022),heldduringSeptember19–30,2022,inTbilisi, Georgia. MPC 2022 featured invited talks, presentations of original research papers, and a discussionpanel. Theprogramincludedthreeinvitedtalks: – ConorMcBride,StrathclydeUniversity,“PickingyourwaythroughPascal’striangle”. – DanielaPetrisan,UniversitéParisCité,“Thesemifreemonad”. – FabioZanasi,UniversityCollegeLondon,“LensTheoreticFoundationsforLearning: fromSemanticstoVerification”. Researchpapersincludenineoriginalresearchpapers,selectedfrom14submissions including 13 complete submissions. Each submission was reviewed by at least three ProgramCommitteemembersandwentthroughanonlinediscussionperiodundertaken bytheProgramCommitteebeforeafinaldecisionwasmade.Theselectionwasbased onlyonthemeritofeachsubmissionandregardlessofschedulingorspaceconstraints. Researchpapersaregroupedintothreetopics:(1)SemanticsofProgramConstruc- tion,(2)ProgrammingMethods,and(3)DataStructuresandProofs. vi Preface The discussion panel “Mathematics of Program Construction Grand Challenge: MachineLearning”featuredinvitedpresentersspeakingon – Semanticsformachinelearning(FabioZanasi,UniversityCollegeLondon), – Types and functional programming for machine learning (Nicholas Wu, Imperial CollegeLondon),and – Formalisingmachinelearningintheoremprovers(ReynoldAffeldt,NationalInstitute ofAdvancedIndustrialScienceandTechnology,Japan). WethankBesikDunduaandthelocalorganizersofCLASforhostingMPC2022, andSpringerforthelongstanding,successfulcooperationwiththeMPCseries.Weare grateful to the 19 members of the MPC 2022 Program Committee and the external reviewers for their timely and invaluable work. Many thanks to Matthew Daggitt, Heriot-Watt University, for serving as publicity chair of MPC 2022 and Alasdair Hill fordesigningthefirstversionoftheMPC2022webpage. Wearehappytonotethattheconferencepaperevaluationwassuccessfullymanaged withthehelpofEasyChair. August2022 EkaterinaKomendantskaya Organization ProgramChair EkaterinaKomendantskaya Heriot-WattUniversity,UK ProgramCommittee MohammadAbdulaziz TechnischeUniversitätMünchen,Germany AuroreAlcolei UniversitàdiBologna,Italy HenningBasold LeidenUniversity,TheNetherlands WilliamByrd UniversityofAlabama,USA JacquesCarette McMasterUniversity,Canada AndreaCostea NationalUniversityofSingapore,Singapore PeterHoefner AustralianNationalUniversity,Australia JohanJeuring UtrechtUniversity,TheNetherlands PatriciaJohann AppalachianStateUniversity,USA AmbrusKaposi EötvösLorándUniversity,Hungary RaduMardare UniversityofStrathclyde,UK AnnabelleMcIver MacquarieUniversity,Australia Shin-ChengMu AcademiaSinica,Taiwan JoseOliveira UniversidadedoMinho,Portugal GrantPassmore Imandra,USA PhilipSaville UniversityofOxford,UK AnaSokolova UniversitätSalzburg,Austria KathrinStark PrincetonUniversity,USA GeorgStruth UniversityofSheffield,UK PublicityChair MatthewDaggitt Heriot-WattUniversity,UK ExternalReviewers ChrisChen Yu-ChingShen IanShillito Abstracts of Invited Talks Picking Your Way Through Pascal’s Triangle ConorMcBride StrathclydeUniversity [email protected] www.strath.ac.uk/staff/mcbrideconordr/ Abstract. Every place in Pascal’s triangle enumerates the paths to that place, zig-zagging downwards from the top, but we can do more than countthem.Binomialcoefficientsmakeforremarkabledependenttypes: bit vectors indexed by their length and one-count can document selec- tionsfromdatastructures,ortheembeddingofaterm’ssupportintoits scope.Theybecomeallthemorediscriminatingwhenyourecognizethat numerical indices are but the erasures of richer, individuating informa- tion.Theycomposeinsequencecategorically,andinparallelmonoidally. Beingmadeofbits,youcandoBooleanlogicwiththem,butwithyour eyesopenastotheirmeaning.WorkingwithPascal’sTriangle,rendered intotypes,haschangedthewayIseeandorganisedataingeneral,and syntacticdatainparticular.Ishallrecountmypathtothisplace,andseek tofindthemeaningintheturnsofmyjourney.

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