116 citations · 1.1k across the 72 of their papers we have counts for
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math.OA2016★ 25 cited
Extreme points of matrix convex sets, free spectrahedra and dilation theory
Eric Evert, J. William Helton, Igor Klep +1
For matrix convex sets a unified geometric interpretation of notions of extreme points and of Arveson boundary points is given. These notions include, in increasing order of streng…
math.OA2016★ 5 cited
Circular Free Spectrahedra
Eric Evert, J. William Helton, Igor Klep +1
This paper considers matrix convex sets invariant under several types of rotations. It is known that matrix convex sets that are free semialgebraic are solution sets of Linear Matr…