9 citations · 15 across the 16 of their papers we have counts for
16 papers
On Conjugacy of Subalgebras in Graph -Algebras. II
Tomohiro Hayashi, Jeong Hee Hong, Wojciech Szymański
We apply a method inspired by Popa's intertwining-by-bimodules technique to investigate inner conjugacy of MASAs in graph -algebras. First we give a new proof of non-inner con…
On the fixed point spaces of some completely positive maps
Tomohiro Hayashi
In this paper we generalize the results shown by Das and Peterson. Let be a -factor acting on . We consider certain unital normal completely positive maps o…
On Conjugacy of Subalgebras of Graph C*-Algebras
Tomohiro Hayashi, Jeong Hee Hong, Sophie Emma Zegers +1
The problem of inner vs outer conjugacy of subalgebras of certain graph C*-algebras is investigated. For a large class of finite graphs E, we show that whenever is a vertex-fix…
On a norm inequality for a positive block-matrix
Tomohiro Hayashi
For a positive semidefinite matrix , we consider the norm inequality . We show that this inequality holds unde…
On the List Decodability of Insertions and Deletions
Tomohiro Hayashi, Kenji Yasunaga
In this work, we study the problem of list decoding of insertions and deletions. We present a Johnson-type upper bound on the maximum list size. The bound is meaningful only when i…
On the conjecture of the norm Schwarz inequality
Tomohiro Hayashi
For any positive invertible matrix and any normal matrix in , we investigate whether the inequality is true or not…