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JOURNALS // Itogi Nauki i Tekhniki. Sovremennaya Matematika i ee Prilozheniya. Tematicheskie Obzory // Archive

Itogi Nauki i Tekhniki. Sovrem. Mat. Pril. Temat. Obz., 2021 Volume 193, Pages 142–152 (Mi into808)

An abstract formula for regularized traces of discrete operators and its applications

N. G. Tomin, I. V. Tomina

Ivanovo State Power University

Abstract: In this paper, we prove an abstract formula for regularized traces of discrete operators in a separable Hilbert space. This formula is a generalization of the formula for the first regularized trace to the case of higher-order traces. We also discuss applications of the formula obtained to a wide class of discrete operators acting in the Bergman space that are generalizations of the Gribov operator from Reggeon field theory.

Keywords: Hilbert space, discrete operator, linear non-self-adjoint operator, spectral theory, regularized trace formula, Bergman space, Reggeon field theory, Gribov operator.

UDC: 517.94, 517.984, 517.951

MSC: 35P20, 47A10, 47B37, 32K15

DOI: 10.36535/0233-6723-2021-193-142-152



© Steklov Math. Inst. of RAS, 2024