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22
ChapterI
handlingso-calleduinsoluble”sentencesindisputations,i.e.,paradoxes;
2)thesophismsinvolvingthewordsuknow”andudoubt”;3)thelogical
problemsarisingfromtheuseofurelative”terms.Thenextthreechap-
tersareconcernedwiththephilosophyofnatureandtheyrespectively
dealwith:4)theproblemofthebeginningandceasingofcontinuous
processes;5)thelimitdecisionproblemonmaximaandminimaofthe
physicalfactorsofthedifferenttypeofchanges.Inthesixthchapter-
Onthethreecategories,Heytesburysetsoutrulesforspeed:inaccelerated
localmotion,withregardtoplace;inquantitativechanges,withregard
toacquiredquantity;inqualitativechangeswithregardtointensityof
quality.34Giventhemaintopicofthisbook,weareinterestedindebates
aboutlocalmovement,whichwewriteaboutintheChapterIII.
4.TheAnonymusAuthorofthe
Desex
inconvenientibus
Agoodtestimonyastotheveryquickassimilationoftheworksof
RichardKilvington,ThomasBradwardineandWilliamHeytesburyis
ananonymoustreatiseentitledDesexinconevnientibus.Thequestionon
localmotion:Utruminmotulocalisitcertaservandavelocitasisthefourthand
thelastquestionoftheanonymoustreatiseDesexinconvenientibuswritten
byathinkerwhoalsowasassociatedwiththeOxfordCalculators.35Al-
34Todate,thebestandonlysuchcomprehensivestudyoftheproblemspresented
inRegulaeisthebookbyC.Wilson,uWilliamHeytesbury.MedievalLogicand
theRiseofMathematicalPhysics”,Madison1960.
35Onthistext(ingeneraloronitsselectedfragments)seeP.Duhem,uÉtudessur
LéonarddeVinci”,vol.3,Paris1913,pp.420-424,471-474;Idem,Ladialectique
duOxfordetlaScolastiqueitalienne,uBulletinItalien”,vol.12(1912),pp.22-26,
101-103,289-292;M.Clagett,uTheScienceofMechanicsintheMiddleAges”,
Madison1959,pp.263-265;S.Caroti,DaWalterBurleyal(Tractatusdesexinconveni-
entibus).Latradizioneinglesedelladiscussionemedievale(Dereactione),uMedioevo.Rivis-
tadiStoriadellaFilosofaMedievale”,vol.21(1995),pp.257-374;G.Fernández
Walker,ANewSourceofNicholasofAutrecourt)s(Quaestio):TheAnonymous(Tracta-
tusdesexinconvenientibus),uBulletindePhilosophieMédiévale”,vol.55(2013),
pp.57-69;S.Rommevaux,SixinconvénientsdécoulantdelarègledumouvementdeTho-
masBradwardinedansuntexteanonymeduXIVesiècle,[in:]uL’hommeaurisquede
l’infni:Mélangesd’histoireetdephilosophiedessciencesoffertsàMichelBlay”,
M.Malpangotto,V.Jullien,E.Nicolaïdis(eds),Turnhout,2013,pp.35-47;Ea-
dem,UnauteuranonymeduXIVesiècle,àOxford,lecteurdePierredeMaricourt,