𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Numerical range and quasi-sectorial contractions

✍ Scribed by Yury Arlinskiĭ; Valentin Zagrebnov


Book ID
108178646
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
239 KB
Volume
366
Category
Article
ISSN
0022-247X

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Operator-Norm Approximation of Semigroup
✍ Vincent Cachia; Valentin A. Zagrebnov 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 223 KB

We extend the Chernoff theory of approximation of contraction semigroups aÁ la Trotter. We show that the Trotter Neveu Kato convergence theorem holds in operator norm for a family of uniformly m-sectorial generators in a Hilbert space. Then we obtain a Chernoff-type approximation theorem for quasi-s

Numerical Ranges ofC0(N) Contractions
✍ Chafiq Benhida; Pamela Gorkin; Dan Timotin 📂 Article 📅 2010 🏛 SP Birkhäuser Verlag Basel 🌐 English ⚖ 249 KB
Operator holes and extensions of sectori
✍ Mark Malamud 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 373 KB

## Abstract We find a criterion of existence and uniqueness of an __m__ ‐sectorial extension of a dual pair {__A__ ~1~, __A__ ~2~} of nonnegative operators. A description of the set of all such extensions of a dual pair {__A__ ~1~, __A__ ~2~} is obtained too. A complete description of the set of al