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| ESTIMATES FOR DISCRETE SPECTRUMOF A CERTAIN SYSTEM | |
| 作者姓名： | 陈祖墀 钱椿林 |
| 摘 要： | 1.IntroductionCanyouheartheshapeofadrum?ProfessorProtteraskedinhisrevisitedpaperrll'Usually,thiskindofproblemscanmathematicallybesolvedbyestimatingtheboundsoftheeigenvaluestopolyharmonicoperators.IfonestrikessimultaneouslyNdrumsmadebythesamematerialandpossessingthesamesize,weshouldaskthatcanyouheartheshapeofthedrums?Toanswerthisquestion,onemightconsideraneigenvalueproblemforacertainsystemasfollows:wherefiisaboundedsmoothdomaininRe(m22),u=(al)ro,',urn)istheoutwardunitnormaltotheboundaryoffi… |
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