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- W2053993460 abstract "Abstract This paper deals with finding bases for finite-dimensional spectral subspaces of a bounded operator on the linear space of all complex-valued continuous functions defined on a compact Hausdorff space. This goal is achieved by computing an exact basis for a spectral subspace of an approximate operator which is not of finite rank. The theoretical framework allows a wide class of approximations, and a special emphasis is given to Kantorovich's singularity subtraction discretization of weakly singular compact integral operators. An application to Hopf's operator in the context of the transfer equation in stellar atmospheres illustrates the numerical computation of a bidimensional spectral subspace corresponding to a cluster of eigenvalues." @default.
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- W2053993460 date "2004-12-31" @default.
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- W2053993460 title "Computation of Spectral Subspaces for Weakly Singular Integral Operators" @default.
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- W2053993460 doi "https://doi.org/10.1081/nfa-120034113" @default.
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