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Found 13 Documents (Results 1–13)

Transmission conditions in one-dimensional model of a rectangular lattice of thin quantum waveguides. (English. Russian original) Zbl 1365.81059

J. Math. Sci., New York 219, No. 6, 994-1015 (2016); translation from Probl. Mat. Anal. 87, 153-172 (2016).
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The Mandelstam energy radiation conditions and the Umov-Poynting vector in elastic waveguides. (English. Russian original) Zbl 1308.35302

J. Math. Sci., New York 195, No. 5, 676-729 (2013); translation from Probl. Mat. Anal. 72, 101-146 (2013).
MSC:  35Q74 74J99
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The asymptotic analysis of gaps in the spectrum of a waveguide perturbed with a periodic family of small voids. (English. Russian original) Zbl 1307.35100

J. Math. Sci., New York 186, No. 2, 247-301 (2012); translation from Probl. Mat. Anal. 66, 101-146 (2012).
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Spectral gaps in the Dirichlet and Neumann problems on the plane perforated by a doubleperiodic family of circular holes. (English. Russian original) Zbl 1254.35162

J. Math. Sci., New York 181, No. 2, 164-222 (2012); translation from Probl. Mat. Anal. 62, 51-100 (2011).
MSC:  35P05 35R05 35B27
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In some curved spaces, one can solve NP-hard problems in polynomial time. (English. Russian original) Zbl 1178.68662

J. Math. Sci., New York 158, No. 5, 727-740 (2009); translation from Zap. Nauchn. Semin. POMI 358, 224-250 (2008).
MSC:  68W10 68Q25
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