Text only print
Full screen print
Operator Algebra Seminars
Seminar information archive ～10/10｜Next seminar｜Future seminars 10/11～
| Date, time & place | Monday 15:30 - 17:00 Room # (Graduate School of Math. Sci. Bldg.) |
|---|---|
| Organizer(s) | MATUI Hiroki, KIDA Yoshikata, KAWAHIGASHI Yasuyuki |
2026/11/02
15:30-17:00 Room # 126 (Graduate School of Math. Sci. Bldg.)
Michiya Mori (Niigata University)
Isometries between C*-algebras with finite corank
Michiya Mori (Niigata University)
Isometries between C*-algebras with finite corank
[ Abstract ]
In this talk, we give a characterization of linear isometries with finite corank between two arbitrary unital C*-algebras in terms of Jordan *-homomorphisms and “finite-dimensional remainders”. Also, the corresponding results are given for linear isometries and linear order embeddings between self-adjoint parts of C*-algebras. In the finite-dimensional case, we give new examples of linear isometries between matrix algebras. This talk is based on arXiv:2607.13367.
In this talk, we give a characterization of linear isometries with finite corank between two arbitrary unital C*-algebras in terms of Jordan *-homomorphisms and “finite-dimensional remainders”. Also, the corresponding results are given for linear isometries and linear order embeddings between self-adjoint parts of C*-algebras. In the finite-dimensional case, we give new examples of linear isometries between matrix algebras. This talk is based on arXiv:2607.13367.
