報告人:張文(廈門大學數學科學學院)
報告題目:Banach空間的球覆蓋性質(Ball-Covering Property of Banach Spaces )
報告摘要:若Banach空間X中的一族不含原點的開球(閉球)B覆蓋了整個單位球面,我們就稱B為Banach空間X的球覆蓋;若X具有可數的球覆蓋,我們就稱X具有球覆蓋性質。我們在報告中會介紹有關Banach空間球覆蓋性質的一些結果。By a ball-coveringB of a Banach space X, we mean that B isa collection of open (or closed) balls off the origin whose unioncontains the unit sphere of X; and X is said to have the ball-covering property provided it admits a ball-covering ofcountably many balls. This talk will show some results on ball-covering property of Banach Spaces.
報告時間:2016年10月15日下午3:00
報告地點:科技樓南樓702