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In the following mixed tensors on the hypersurface M Rn+1 under consideration willbe denoted by T={ Tijkl} ,the induced metric by g={ gij} and the second fundamentalform by A={ hij} .We always sum overrepeated indices from1 to n and use brackets forthe inner product on M:〈Tijk,Sijk〉 =gisgjαgkβTijk Ssαβ, | T| 2 =〈Tijk,Tijk〉.Setrkl =gkαhαl,Sm(λ1 ,… ,λn) = i1<… 相似文献
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ParabolicMonge Amp埁reoperatorMu =-utdetD2 ucontributesalotintheproofoftheAleksandrov Bakel mantypemaximumprincipleforsecondorderparabolicequation ,whichhasbeendonebyK .S .Tsoin [1 ] .Nowweconsidertheinitial boundaryvalueproblemofparabolicMonge Amp埁reequation-utd… 相似文献
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引言大家都知道,在经典的椭圆、双曲、抛物方程的边值问题中,随方程的类型不同,定解条件在形式上有着很大的差别,问题的解法也很不相同。这一基于不同的物理背景所产生的差别,早已引人注目,以致 相似文献
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