H. Radjavi

activity

20072026

most citedMatrix Algebras with a Certain Compression Property II

3 citations · 12 across the 18 of their papers we have counts for

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Showing 2024Show all

3 papers · 1 filter

math.FA2024

Invariant embeddings and ergodic obstructions

Mitja Mastnak, Heydar Radjavi

We consider the following question: Let $A$ be an abelian self-adjoint algebra of bounded operators on a Hilbert space $H$ . Assume that $A$ is invaria…

math.FA2024★ 1 cited

On commutators of square-zero Hilbert space operators

Laurent W. Marcoux, Heydar Radjavi, Yuanhang Zhang

Let $H$ be a complex, separable Hilbert space, and set $c ($ NIL $_{2}) = {M N - N M : N, M \in B (H), M^{2} = 0 = N^{2}}$ . When $dim H$ …

math.RA2024

Invariant embeddings and weighted permutations

Mitja Mastnak, Heydar Radjavi

We prove that for any fixed unitary matrix $U$ , any abelian self-adjoint algebra of matrices that is invariant under conjugation by $U$ can be embedded into a maximal abelian self-…