From Servant to Queen A Journey through Victorian Mathematics Withafewexceptions,puremathematicsinBritainatthebeginningofthe nineteenth century was a recreation for amateurs. Drawing on primary sources, John Heard provides an engaging account of the process by which it rose to become an academic discipline of repute which by the FirstWorldWarwasledbyGHHardy,andsupportedbytheinternation- ally respected London Mathematical Society. In chronicling that rise, this book describes key contributions and the social environment in which mathematicians operated, uses contemporary commentary where appro- priate,andprovidesfullreferencestohelpanyresearcherswhowanttodig deeper into the original sources. No mathematical knowledge is required, andreaderswithawiderangeofinterestsandbackgroundswillfindmuch toenjoyinthisuniqueinsightintotheworldofVictorianmathematicsand science. JohnHeardisanindependentresearcherwithadoctorateinthehistoryof sciencefromImperialCollegeLondon.HeisalsoamemberoftheBritish Society for the History of Science, the British Society for the History of Mathematics, and a Fellow of the Institute of Chartered Accountants in EnglandandWales. ArthurCayley,paintedbyLowesCatoDickinsonin1872;asatiricalversebyJames ClerkMaxwellconcludeswiththelines: ...byDickinsondepicted Intwodimensions,wetheformmaytrace Ofhimwhosemind,toolargeforvulgarspace, Inndimensionsflourishedunrestricted. From Servant to Queen A Journey through Victorian Mathematics John Heard UniversityPrintingHouse,CambridgeCB28BS,UnitedKingdom OneLibertyPlaza,20thFloor,NewYork,NY10006,USA 477WilliamstownRoad,PortMelbourne,VIC3207,Australia 314–321,3rdFloor,Plot3,SplendorForum,JasolaDistrictCentre, NewDelhi–110025,India 79AnsonRoad,#06–04/06,Singapore079906 CambridgeUniversityPressispartoftheUniversityofCambridge. ItfurtherstheUniversity’smissionbydisseminatingknowledgeinthepursuitof education,learning,andresearchatthehighestinternationallevelsofexcellence. www.cambridge.org Informationonthistitle:www.cambridge.org/9781107124134 DOI:10.1017/9781316415726 ©JohnHeard2019 Thispublicationisincopyright.Subjecttostatutoryexception andtotheprovisionsofrelevantcollectivelicensingagreements, noreproductionofanypartmaytakeplacewithoutthewritten permissionofCambridgeUniversityPress. Firstpublished2019 PrintedintheUnitedKingdombyTJInternationalLtd.PadstowCornwall AcataloguerecordforthispublicationisavailablefromtheBritishLibrary. LibraryofCongressCataloging-in-PublicationData NAMES:Heard,John(JohnMichael),author. TITLE:FromServanttoQueen:AJourneythroughVictorianMathematics/JohnHeard. DESCRIPTION:Cambridge;NewYork,NY:CambridgeUniversityPress,2019.|Includes bibliographicalreferencesandindex. IDENTIFIERS:LCCN2018042537|ISBN9781107124134 SUBJECTS:LCSH:Hardy,G.H.(GodfreyHarold),1877–1947.|Mathematicians–Great Britain–Biography.|Mathematics–History–19thcentury.|Mathematics–History– 20thcentury.|Aesthetics.|Mathematicsinnature. CLASSIFICATION:LCCQA29.H23H432019|DDC510.92/241–dc23 LCrecordavailableathttps://lccn.loc.gov/2018042537 ISBN978-1-107-12413-4Hardback CambridgeUniversityPresshasnoresponsibilityforthepersistenceoraccuracyof URLsforexternalorthird-partyinternetwebsitesreferredtointhispublication anddoesnotguaranteethatanycontentonsuchwebsitesis,orwillremain, accurateorappropriate. This book is dedicated to the memory of my dear parents, Nancy and Percy. CONTENTS ListofFigures pageviii Acknowledgements ix NotesfortheReader x 1 SettingtheScene 1 2 TheLegacyofNewton 11 3 TheLondonMathematicalSociety 50 4 ThePureMathematicianasHero 111 5 MathematiciansinanAetherealWorld 145 6 ApologiasforPureMathematicians 190 7 EmbracingBeauty 214 Epilogue 243 SelectBibliography 247 Index 257 FIGURES 3.1 Invitationtothefirstmeetingofthe‘UniversityCollege MathematicalSociety’ page58 3.2 OriginaldesignbyAugustusDeMorganofabadgeforthe LondonMathematicalSociety 62 3.3 ConstructiondiagramfromthefirstpropositioninEuclid’s Elements 63 3.4 TotalnumberofordinarymembersoftheLondon MathematicalSocietyateachpositioninthetableof wranglers 73 4.1 JamesWhitbreadLeeGlaisher 116 4.2 HenryJohnStephenSmith 129 5.1 Chartshowingreferencesto‘puremathematician(s)’ 146 5.2 Thecontroversial‘parallelpostulate’fromtheElementsof Euclid 167 6.1 Sylvester’scharacterisationofmathematicaldiscovery 207 7.1 CartoonfromPunchbyGeorgeduMaurier 219 7.2 LoisCayley:clearlyamathematician 230 7.3 Theexistenceproof:Hardyontheleft,Littlewoodonthe right 238 ACKNOWLEDGEMENTS Thisbookcouldnothavebeenwrittenwithoutaccesstomanylibraries and archives, and I extend my sincere thanks to the librarians and archivistswho,overtheyears,haveallowedmetoconsultthematerials intheircare.Someofthesematerialsarequotedorreproducedhere,and in this respect I am pleased to make the following acknowledgements: lettersfromHenryBaker,bypermissionoftheMasterandFellowsofSt John’s College, Cambridge; the portrait of Arthur Cayley, the photo- graphofGHHardyandJELittlewood,aletterfromHaraldCramér, and an obituary speech by Alexander Ostrowski, by permission of the MasterandFellowsofTrinityCollege,Cambridge;lettersfromAndrew Russell Forsyth, by permission of the British Library; a letter from G H Hardy, by permission of the Syndics of Cambridge University Library;the journalofThomasArcher Hirst,bycourtesyof theRoyal InstitutionofGreatBritain;minutebooksoftheLondonMathematical Society, by courtesy of the Society; portrait of J W L Glaisher, by permission of the Royal Astronomical Society; ‘My First Gorilla’, by permissionoftheZoologicalSocietyofLondon;asketchofabadgefor theLondonMathematicalSociety,alettertoThomasArcherHirst,and letters from Sophia De Morgan, by permission of University College (London)Library,SpecialCollections. IamgratefultoJuneBarrow-Greenforaninitialsuggestionthat led to the writing of this book, and to her and Tony Crilly for their valuablecommentsonadraftofit;ofcourse,theresponsibilityforany errorsoromissionsisminealone.Finally,mypartnerStellaPilavakihas provided constant and loving support and encouragement throughout theauthorialprocess.