报告人：郑本拓教授

        孟菲斯大学数学系

报告题目：Banach spaces with spreading bases

报告时间：2016年05月26日下午15:00

报告地点：海韵行政楼B313

学院联系人:张文副教授

报告摘要：In this talk,  we will present the structure of Banach spaces with a

conditional spreading basis. The geometry of such spaces exhibit a striking resemblance to

the geometry of James' space. Further, we show that the averaging projections onto sub-

spaces spanned by constant coecient blocks with no gaps between supports are bounded.

As a consequence, every Banach space with a spreading basis contains a complemented

subspace with an unconditional basis. This gives an armative answer to a question of H.

Rosenthal.

欢迎广大师生参加！