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A spectral theorem for bilinear compact operators in Hilbert spaces

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Author(s):
da Silva, Eduardo Brandani ; Fernandez, Dicesar L. ; de Andrade Neves, Marcus Vinicius
Total Authors: 3
Document type: Journal article
Source: BANACH JOURNAL OF MATHEMATICAL ANALYSIS; v. 15, n. 2, p. 36-pg., 2021-04-01.
Abstract

Current work defines Schur representation of a bilinear operator T: H x H -> H, where H is a separable Hilbert space. Introducing the concepts of self-adjoint bilinear operators, ordered eigenvalues and eigenvectors, we prove that if T is compact, self-adjoint, and its eigenvalues are ordered, then T has a Schur representation, thus obtaining a spectral theorem for T on real Hilbert spaces. We prove that the hypothesis of the existence of ordered eigenvalues is fundamental. (AU)

FAPESP's process: 18/19764-4 - s-Numbers, Interpolation and Bilinear Operator Ideals
Grantee:Dicesar Lass Fernandez
Support Opportunities: Research Grants - Visiting Researcher Grant - Brazil