scientific article; zbMATH DE number 1223486
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Publication:4218787
zbMath0931.47027MaRDI QIDQ4218787
V. L. Khatskevich, Tomas Ya. Azizov, Aalt Dijksma
Publication date: 14 February 1999
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
elliptic problemsdefectperiodic problemcontractionsunbounded selfadjoint operatorsKrein spacesnonnegative extension
General theory of partial differential operators (47F05) Dilations, extensions, compressions of linear operators (47A20) Spaces with indefinite inner product (Kre?n spaces, Pontryagin spaces, etc.) (46C20) Applications of functional analysis to differential and integral equations (46N20) Linear operators on spaces with an indefinite metric (47B50)
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Pontryagin's theorem and spectral stability analysis of solitons ⋮ On basis properties of selfadjoint operator functions
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