摘要
首先给出了Banach格上正的Dunford-Pettis算子是L-弱紧算子的充分必要条件,且给出了有限维的Banach格的另一个刻画,其次给出了Banach格上正的Dunford-Pettis算子是M-弱紧算子的必要条件,最后给出了Banach格上正的M-弱紧算子是Dunford-Pettis算子的充分条件.
We present some necessary and sufficient conditions for positive Dunford-Pettis operators being L-weakly compact.We also give a necessary condition under which each positive Dunford-Pettis operator is M-weakly compact.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2011年第5期632-634,共3页
Journal of Sichuan Normal University(Natural Science)
基金
supported by the National Natural Science Foundation of China(60674057)~~