看你網名是知道拓撲的,0 not in { 1/2^n, n=0, 1, 2, ... }
所有跟帖:
• 但是這個空間不完備 -mobius- ♂ (0 bytes) () 05/10/2024 postreply 22:04:38
• 不完備有問題嗎? -slow_quick- ♂ (0 bytes) () 05/10/2024 postreply 22:49:06
• 但是這個空間不完備 -mobius- ♂ (0 bytes) () 05/10/2024 postreply 22:04:38
• 不完備有問題嗎? -slow_quick- ♂ (0 bytes) () 05/10/2024 postreply 22:49:06
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