Dilations, Linear Matrix Inequalities, the Matrix Cube Problem and Beta Distributions 1

Vetenskap & teknik

Dilations, Linear Matrix Inequalities, the Matrix Cube Problem and Beta Distributions

J William Helton • Igor Klep • Scott McCullough • Markus Schweighofer

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104 sidor
2019

An operator $C$ on a Hilbert space $\mathcal H$ dilates to an operator $T$ on a Hilbert space $\mathcal K$ if there is an isometry $V:\mathcal H\to \mathcal K$ such that $C= V^* TV$. A main result of this paper is, for a positive integer $d$, the simultaneous dilation, up to a sharp factor $\vartheta (d)$, expressed as a ratio of $\Gamma $ functions for $d$ even, of all $d\times d$ symmetric matrices of operator norm at most one to a collection of commuting self-adjoint contraction operators on a Hilbert space.

Författare: J William Helton, Igor Klep, Scott McCullough, Markus Schweighofer
Format: Pocket/Paperback
ISBN: 9781470434557
Språk: Engelska
Antal sidor: 104
Utgivningsdatum: 2019-03-30
Förlag: American Mathematical Society