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数学中国»论坛 › 数学中国论坛› 基础数学
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基础数学 今日: 2 |主题: 32817|排名: 4 

版主: luyuanhong
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预览 Closure of union and union of closures attachment kindlychung 2010-10-3 01:23 33681 wangyangkee 2010-10-7 16:36
预览 finite, compact attachment kindlychung 2010-10-2 17:25 23258 wangyangkee 2010-10-7 16:35
预览 Perfect set of rationals. attachment  ...2 kindlychung 2010-10-2 17:37 106826 wangyangkee 2010-10-7 16:35
预览 Does Cantor set contain isolated points? kindlychung 2010-10-2 16:04 43466 wangyangkee 2010-10-7 16:34
预览 Cantor set completely seperated. attachment kindlychung 2010-10-3 15:28 13380 wangyangkee 2010-10-7 16:34
预览 Nonempty perfect set of irrational numbers attachment kindlychung 2010-10-3 15:44 13579 wangyangkee 2010-10-7 16:33
预览 set connected => set closure connected? attachment kindlychung 2010-10-2 20:30 95396 wangyangkee 2010-10-7 16:33
预览 F\sigma set and G\delta set attachment kindlychung 2010-10-1 16:17 54281 wangyangkee 2010-10-7 16:32
预览 Density of Q diluted? attachment kindlychung 2010-10-3 16:45 34048 wangyangkee 2010-10-7 16:31
预览 Sum of Cantor sets attachment kindlychung 2010-10-2 14:07 84178 wangyangkee 2010-10-7 16:31
预览 关于证明的路径 attachment popo 2010-10-5 20:02 74370 changbaoyu 2010-10-7 14:36
预览 请教：关于逆否命题 attachment  ...2 popo 2010-10-4 23:16 169286 changbaoyu 2010-10-7 13:17
预览 二氯甲烷立体结构是只有一种理论 XIAOYU6968 2010-10-7 11:38 04004 XIAOYU6968 2010-10-7 11:38
预览 催化剂与分遗产 XIAOYU6968 2010-10-7 11:31 03705 XIAOYU6968 2010-10-7 11:31
预览 [原创]让外国人来攻占我们这个山头——凤鸣山  ...2345 技术员 2010-9-28 21:41 4217065 elimqiu 2010-10-7 11:02
预览 【数论小题征解】已知a为质数，b为奇数，a^2+b^2=629.··· trx 2010-10-6 15:49 23866 trx 2010-10-7 08:24
预览 我对最大自然数的思考，呵呵！  ...23 awei 2010-10-3 23:25 2412850 elimqiu 2010-10-7 01:37
预览 非标准分析的基本想法 luyuanhong 2010-10-6 12:16 75256 luyuanhong 2010-10-7 00:28
预览 极限运算与对应法则可交换 转不动的脑筋 2010-10-6 21:35 14339 luyuanhong 2010-10-6 22:16
预览 实用小题征答 attachment  ...2 trx 2010-10-1 11:17 1811313 luyuanhong 2010-10-6 07:38
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