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20022018
most citedAn extension of Mercer's theorem to unbounded operators

4 citations · 7 across the 10 of their papers we have counts for

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math.SP2012

On Fredholm's Integral Equations on the Real Line, Whose Kernels Are Linear in a Parameter

Igor M. Novitskii

In this paper, we study an infinite system of Fredholm series of polynomials in , formed, in the classical way, for a continuous Hilbert-Schmidt kernel on $\mathbb{R}\times\math…

math.SP2012

Kernels of Integral Equations Can Be Boundedly Infinitely Differentiable on

Igor M. Novitskii

In this paper, we reduce the general linear integral equation of the third kind in , with largely arbitrary kernel and coefficient, to an equivalent integral equation eit…

math.SP2012★ 1 cited

Integral operators with infinitely smooth bi-Carleman kernels of Mercer type

Igor M. Novitskii

With the aim of applications to solving general integral equations, we introduce and study in this paper a special class of bi-Carleman kernels on , cal…

math.SP2004

Simultaneous unitary equivalence to Carleman operators with arbitrarily smooth kernels

Igor M. Novitskii

In this paper, we describe families of those bounded linear operators on a separable Hilbert space that are simultaneously unitarily equivalent to integral operators on wi…

math.SP2004

Integral representations of closed operators as bi-Carleman operators with arbitrarily smooth kernels

Igor M. Novitskii

In this paper, we characterize all closed linear operators in a separable Hilbert space which are unitarily equivalent to an integral bi-Carleman operator in with bounded…

math.SP2004★ 1 cited

Simultaneous unitary equivalence to bi-Carleman operators with arbitrarily smooth kernels of Mercer type

Igor M. Novitskii

In this paper, we characterize the families of those bounded linear operators on a separable Hilbert space which are simultaneously unitarily equivalent to integral bi-Carleman ope…

math.SP2002★ 1 cited

Integral representations of unbounded operators by arbitrarily smooth Carleman kernels

Igor M. Novitskii

In this paper, we give a characterization of all closed linear operators in a separable Hilbert space which are unitarily equivalent to an integral operator in with bounde…