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math.OA2005
Solvability of Symmetric Word Equations in Positive Definite Letters
Scott N. Armstrong, Christopher J. Hillar
Let be a symmetric (``palindromic'') word in two letters and . A theorem due to Hillar and Johnson states that for each pair of positive definite matrices and $…
math.OA2002
On embeddings of full amalgamated free product C*-algebras
Scott Armstrong, Ken Dykema, Ruy Exel +1
We examine the question of when the *-homomorphism of full amalgamated free product C*-algebras λ: A *_D B --> A' *_{D'} B', arising from compatible inclusions of C*-algebras A in…