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2 Necessary facts about Sobolev spaces
3 Elliptic differential inequalities
3 other sections not shown
analogous analytic analytic functions assertion assume asymptotic Blaschke product boundary bounded chain cone consider const constant construction continuous convex corresponding covector cubes decomposition defined definition denote derived categories diffeomorphisms differential domain eigenvalues English transl equality equation equivalent estimate exists finite follows Hamiltonian hence Hilbert space holds inequality inner function integral invariant invariant subspaces irreducible isomorphic kernel lattice Lemma Leningrad Lie algebra linear mapping Mathematical Mathematics Subject Classification maximum principle multiplicity Nauk nonlinear norm obtained pair parameter perturbation polynomial problem proof of Theorem properties Proposition proved relations representation respect Riemann-Roch theorem satisfying the conditions scattering matrix scattering theory selfadjoint singular smooth solution Soviet Math space spectral spectrum Steklov subgroup subspace sufficiently Suppose Theorem 1.1 theory trace formula trace-class unique unitary variables vector field zero