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Found 19 Documents (Results 1–19)

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A model in the theory of perturbations of the essential spectrum of multiparticle operators. (English. Russian original) Zbl 1059.81059

Math. Notes 73, No. 4, 521-528 (2003); translation from Mat. Zametki 73, No. 4, 556-564 (2003).
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On the distance to the closest matrix with triple zero eigenvalue. (English. Russian original) Zbl 1059.15032

Math. Notes 73, No. 4, 511-520 (2003); translation from Mat. Zametki 73, No. 4, 545-555 (2003).
MSC:  15A60 15A18 15A42
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Identities of semigroups of triangular matrices over finite fields. (English. Russian original) Zbl 1064.20056

Math. Notes 73, No. 4, 474-481 (2003); translation from Mat. Zametki 73, No. 4, 502-510 (2003).
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