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К теории Бирмана–Крейна–ВишикаLet AmA > 0 be a closed positive definite symmetric operator in a

Spectral properties of functional-differential operators and a Gårding-type inequality, for any nonzero vector, the operator is positive definite. The symmetrized operator is considered which

To Birman–Krein–Vishik TheoryLet AmA > 0 be a closed positive definite symmetric operator

On the calculation of bounds for the spectrum of a symmetric matrix D in the operator sense for the large-scale square matrices A and D, where D is positive-definite

Approximation of operator eigenvalue problems in a Hilbert space positive definite operator in an infinite-dimensional Hilbert space is approximated by an operator

On the Birman Problem in the Theory of Nonnegative Symmetric Operators with Compact Inverse="mathjax-tex">\(\Bbb R^2\) (in \(\Bbb R^3\)) is a nonnegative symmetric operator

EXISTENCE OF OPTIMAL DOMAINS IN PROBLEMS WITH B-SYMMETRICAL B-POSITIVE OPERATORSEXISTENCE OF OPTIMAL DOMAINS IN PROBLEMS WITH B-SYMMETRICAL B-POSITIVE OPERATORS

Approximation of operator eigenvalue problems in a Hilbert space positive definite operator in an infinite-dimensional Hilbert space is approximated by an operator

О конформно киллинговых и гармонических формах на Римановых симметрических пространствах that there are no non-zero harmonic forms on a complete, simply connected and irreducible symmetric space with positive

On the stability of nonlocal boundary value problem for a third order PDE differential equations in a Hilbert space with a self-adjoint positive definite operator. The main theorem

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