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单词 ProofOfWeylsInequality
释义

proof of Weyl’s inequality


Let λi be the i-th eigenvalueMathworldPlanetmathPlanetmathPlanetmathPlanetmath of A+E. Then, by the Courant-Fisher min-max theorem and being xHEx0 by hypothesis, we have:

λi(A+E)=maxS,dimS=iminx0xH(A+E)xxHx=
=maxS,dimS=iminx0(xHAxxHx+xHExxHx)maxS,dimS=iminx0xHAxxHx=λi(A).

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更新时间:2025/5/4 10:02:21