3 citations · 12 across the 18 of their papers we have counts for
26 papers
Fully non-zero matrices and generators of full algebras of operators
Laurent W. Marcoux, Heydar Radjavi, Bamdad R. Yahaghi +1
In a wide variety of fields, every non-scalar matrix is similar to a matrix all of whose entries are non-zero. We give extensions of this result, including some in the division…
On products of symmetries acting on Hilbert spaces
Laurent W. Marcoux, Heydar Radjavi, Yuanhang Zhang
Let be a complex, separable Hilbert space (of finite or infinite dimension), and let denote the group of unitary operators on …
Invariant embeddings and ergodic obstructions
Mitja Mastnak, Heydar Radjavi
We consider the following question: Let be an abelian self-adjoint algebra of bounded operators on a Hilbert space . Assume that is invaria…
On commutators of square-zero Hilbert space operators
Laurent W. Marcoux, Heydar Radjavi, Yuanhang Zhang
Let be a complex, separable Hilbert space, and set NIL. When …
Invariant embeddings and weighted permutations
Mitja Mastnak, Heydar Radjavi
We prove that for any fixed unitary matrix , any abelian self-adjoint algebra of matrices that is invariant under conjugation by can be embedded into a maximal abelian self-…
On approximate and actual reducibility of matrix groups
Bojan Kuzma, Mitja Mastnak, Heydar Radjavi +1
We introduce the notions of -approximate fixed point and weak -approximate fixed point. We show that for a group of unitary matrices even the existence of…