Dilations, Linear Matrix Inequalities, the Matrix Cube Problem and Beta Distributions - Memoirs of the American Mathematical Society (Paperback)J. William Helton (author), Igor Klep (author), Scott McCullough (author), Markus Schweighofer (author)
Paperback 104 Pages / Published: 30/12/2018
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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.
Publisher: American Mathematical Society
Number of pages: 104
Dimensions: 254 x 178 mm
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