Geodesic
Szeg\H o-Type Limit Theorems for Generalized Discrete Convolution Operators
Matematičeskie zametki, Tome 78 (2005) no. 2, pp. 265-277.

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We study the asymptotic behavior of the averaged $f$-trace of a truncated generalized multidimensional discrete convolution operator as the truncation domain expands. By definition, the averaged $f$-trace of a finite-dimensional operator $A$ is equal to $n^{-1}\sum_{k=1}^nf(\lambda_k)$, where $n$ is the dimension of the space in which the operator $A$ acts, the set of numbers $\lambda_k$, $k=1,\dots,n$, is the complete collection of eigenvalues of the operator $A$, counting multiplicity; a generalized discrete convolution is an operator from the closure of the algebra generated by discrete convolution operators and by operators of multiplication by functions admitting a continuous continuation onto the sphere at infinity. 
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I. B. Simonenko. Szeg\H o-Type Limit Theorems for Generalized Discrete Convolution Operators. Matematičeskie zametki, Tome 78 (2005) no. 2, pp. 265-277. http://geodesic.mathdoc.fr/item/MZM_2005_78_2_a11/

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