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Found 12 Documents (Results 1–12)

Recent progress in quasi-periodic lattice Schrödinger operators and Hamiltonian partial differential equations. (English. Russian original) Zbl 1113.47021

Russ. Math. Surv. 59, No. 2, 231-246 (2004); translation from Usp. Mat. Nauk 59, No. 2, 37-52 (2004).
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On the compactness of the set of solutions of a quasilinearly perturbed equation of harmonic mappings. (English. Russian original) Zbl 1053.53042

Russ. Math. Surv. 57, No. 5, 995-996 (2002); translation from Usp. Mat. Nauk 57, No. 5, 155-156 (2002).
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Stability of the upper bound of a spectrum under perturbations by diagonal matrices for a class of self-adjoint operators. (English. Russian original) Zbl 0931.47012

Russ. Math. Surv. 53, No. 2, 406-407 (1998); translation from Usp. Mat. Nauk 53, No. 2, 163-164 (1998).
MSC:  47A55 47B25
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Non-self-conjugate singular perturbations: A model of transition from a discrete to a continuous spectrum. (English. Russian original) Zbl 0856.34069

Russ. Math. Surv. 50, No. 6, 1311-1313 (1995); translation from Usp. Mat. Nauk 50, No. 6, 219-220 (1995).
MSC:  34E15 34A30
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The maximal attractor of the semigroup corresponding to the first boundary-value problem for a singularly perturbed parabolic equation. (English. Russian original) Zbl 0658.35007

Russ. Math. Surv. 42, No. 2, 299-300 (1987); translation from Usp. Mat. Nauk 42, No. 2(254), 243-244 (1987).
MSC:  35B25 35K60 35B40
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Unstable invariant sets of semigroups of non-linear operators and their perturbations. (English. Russian original) Zbl 0624.47065

Russ. Math. Surv. 41, No. 4, 1-41 (1986); translation from Usp. Mat. Nauk 41, No. 4(250), 3-34 (1986).
Reviewer: Tu Gui-Zhang
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