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1、ThispageintentionallyleftblankCAUSALITY,MEASUREMENTTHEORYANDTHEDIFFERENTIABLESTRUCTUREOFSPACE-TIMEIntroducinggraduatestudentsandresearcherstomathematicalphysics,thisbookdiscussestworecentdevelopments:thedemonstrationthatcausalitycanbedefinedondiscretespace-times
2、;andSewell’smeasurementtheory,inwhichthewavepacketisreducedwithoutrecoursetotheobserver’sconsciousego,nonlinearitiesorinteractionwiththerestoftheuniverse.Thedefinitionofcausalityonadiscretespace-timeassumesthatspace-timeismadeupofgeometricalpoints.UsingSewell’sm
3、easurementtheory,theauthorconcludesthatthenotionofgeometricalpointsisasmeaningfulinquantummechanicsasitisinclassicalmechanics,andthatitisimpossibletotellwhetherthedifferentialcalculusisadiscoveryoraninvention.Thismathematicaldis-courseontherelationbetweentheoret
4、icalandexperimentalphysicsincludesdetailedaccountsofthemathematicallydifficultmeasurementtheoriesofvonNeumannandSewell.R.N.SenwasaProfessorintheDepartmentofMathematicsatBen-GurionUniversity,Beer-Sheva,Israel,andisnowretired.Hismainresearchinter-estswerethetheoryo
5、fsymmetryofinfinitequantum-mechanicalsystemsandmathematicalinvestigationsintotherelationbetweenmathematicsandphysics,particularlytheoriginsofthedifferentiablestructureofspace-time.Hehastaughtabroadspectrumofcoursesonphysicsandmathematics,aswellasdemography.ALifeM
6、emberofClareHall,Cambridge,hehasbeenaGaussProfessorinG¨ottingenandisalsoamemberoftheInternationalAssociationforMathematicalPhysicsandoftheIsraelMathematicalUnion.CAMBRIDGEMONOGRAPHSONMATHEMATICALPHYSICSGeneralEditors:P.V.Landshoff,D.R.Nelson,SWeinbergS.J.Aarseth
7、GravitationalN-BodySimulations:ToolsandAlgorithmsJ.Ambjørn,B.DurhuusandT.JonssonQuantumGeometry:AStatisticalFieldTheoryApproachA.M.AnileRelativisticFluidsandMagneto-fluids:WithApplicationsinAstrophysicsandPlasmaPhysicsJ.A.deAzc´arragaandJ.M.IzquierdoLieGroups,Li
8、eAlgebras,CohomologyandSome†ApplicationsinPhysics†O.Babelon,D.BernardandM.TalonIntroductiontoClassicalIntegrableSystemsF.BastianelliandP.vanNieuwenhuizenPathIntegralsandAnom