O. Bourget

activity

20022024

most citedSpectral Analysis of Unitary Band Matrices

45 citations · 134 across the 21 of their papers we have counts for

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2 papers · 1 filter

math.FA2014

Spectral stability for compact perturbations of Toeplitz matrices

M. A. Astaburuaga, O. Bourget, V. H. Cortés

Let $f$ be a regular real-valued non-constant symbol defined on the one dimensional torus $T$ . Denote respectively by $κ$ and $T$ , its set of critical points and the asso…

math.FA2013

Commutation Relations for Unitary Operators

M. A. Astaburuaga, O. Bourget, V. H. Cortés

Let $U$ be a unitary operator defined on some infinite-dimensional complex Hilbert space $H$ . Under some suitable regularity assumptions, it is known that a local positive c…