3 papers
math.FA2026
On similarity to contraction semigroups and tensor products, II: Infinite tensor products
Jesus Oliva-Maza, Yuri Tomilov
We develop a framework for infinite tensor products of Hilbert spaces, operators, and semigroups tailored to questions of similarity to contraction semigroups. On the operator-theo…
math.FA2025
Similarity to contraction semigroups: structural properties, criteria, and applications to control theory
J. Oliva-Maza, Y. Tomilov
We reveal new aspects of the structure of Hilbert space -semigroups similar to semigroups of contractions. In particular, we prove that $\mathca…
math.FA2025
On similarity to contraction semigroups and tensor products, I
J. Oliva-Maza, Y. Tomilov
In the context of finite tensor products of Hilbert spaces, we prove that similarity of a tensor product of operator semigroups to a contraction semigroup is equivalent to the corr…