天穹99442
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Walter RudinPrinciples of Mathematical Analysis3rd Edition
第三版的刊误和更正，英文PDF，如：P.4,line4:Changethislineto‘‘(ii)Ifγ∈SisanupperboundofE,thenγ≥α’’forgreaterclarityP.43rdlineofDefinition1.10:Aclearerstatementwouldbe,
An Introduction to Ordinary Differential Equations James C.Robinson
经典微分方程的教材，适合初学者PartIFirstorderdifferentialequationsPartIISecondorderlinearequationswithconstantcoefficientsPartIIILinearsecondorderequationswithvariabl