TY  - JOUR
ID  - acta73911
A1  -  Li Chi-Kwong
A1  -  Poon Yiu Tung
N1  - Bibliogr.: p. 695-696. ; összefoglalás angol nyelven
Y1  - 2020///
TI  - Numerical range, dilation, and maximal operator systems
SP  - 681
EP  - 696
AV  - restricted
JF  - Acta scientiarum mathematicarum
KW  - Matematika
VL  - 86
SN  - 2064-8316
IS  - 3-4
UR  - http://acta.bibl.u-szeged.hu/73911/
N2  - An operator system is a unital self-adjoint subspace of bounded linear operators. It is maximal if every positive linear map from it to another operator system is completely positive. In this paper, characterizations of maximal operator systems in terms of the joint numerical range are presented. New families of maximal operator systems are identified. These results admit formulations in terms of numerical range inclusion and dilation of operators that unify and extend earlier results on the topic.
ER  -