Why [0,2*pi) is not compact? - Mathematics版 - 未名存档

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Mathematics版 - Why [0,2*pi) is not compact?

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话题: pi话题: why话题: compact话题: cover话题: could

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t****s 发帖数: 21	1 Could anyone please give me an open cover {V_alpha} of [0,2pi) that does not have a finite subcollection that can cover [0,2pi)? Thanks in advance
x*****d 发帖数: 427	2 Un=[0, 2 pi- 1/n) not 【在 t***s 的大作中提到】 : Could anyone please give me an open cover {V_alpha} of [0,2pi) that does not : have a finite subcollection that can cover [0,2*pi)? : Thanks in advance
t****s 发帖数: 21	3 Thanks again! And Admire to death!!! 【在 x*****d 的大作中提到】 : Un=[0, 2 pi- 1/n) : : not

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话题: pi话题: why话题: compact话题: cover话题: could

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