Numerical Ranges and Dilations Dedicated to Professor Yik-Hoi Au-Yeung on the occasion of his retirement

نویسنده

  • Chi-Kwong Li
چکیده

Denote by W (A) the numerical range of a bounded linear operator A. For two operators A and B (which may act on different Hilbert spaces), we study the relation between the inclusion relation W (A) ⊆W (B) and the condition that A can be dilated to an operator of the form B ⊗ I. We also investigate the possibilities of dilating an operator A to operators with simple structure under the assumption that W (A) is included in a special region.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A Tribute to Professor H. G. Widdowson on the Occasion of his Visit to Azarbaijan Shahid Madani University, Tabriz, 2018

There are such great names in language studies as Noam Chomsky, Lev S. Vygotsky, Howard Gardener and Michael Halliday who are widely accredited with having introduced new concepts in linguistics and neighboring disciplines and to whom we remain deeply indebted. In this article which has been written on the occasion of Professor Henry Widdowson's visit in April 2018 to Azarbaijan Shahid Madani U...

متن کامل

A NONLOCAL REACTION-DIFFUSION POPULATION MODEL WITH STAGE STRUCTURE Dedicated to Professor Paul Waltman on the occasion of his retirement DASHUN XU AND XIAO-QIANG ZHAO

A threshold dynamics and global attractivity of positive steady state are established in terms of principal eigenvalues for a nonlocal reaction-diffusion population model with stage structure, and the effects of spatial dispersal and maturation period on the evolutionary behavior are also discussed in two specific cases.

متن کامل

Proton-coupled electron transfer chemistry of hangman macrocycles: Hydrogen and oxygen evolution reactions

This special issue of JPP is dedicated to Professor Shunichi Fukuzumi on the occasion of his retirement from the Osaka University, Osaka, Japan. The cover images are taken in part from Prof. Fukuzumi’s publications and website, and illustrates his research activities covering different areas of photochemistry and photocatalysis, in recent years. The current issue of JPP contains 52 papers from ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2004