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作者 plover 在 PTT [ Math ] 看板的留言(推文), 共104則
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[高微] A,B closed 判斷A+B是否closed
[ Math ]15 留言, 推噓總分: +2
作者: IminXD - 發表於 2011/12/13 16:58(14年前)
14Fplover:要證明 "=> not open",必須要舉反例證明 XD12/15 01:26
15Fplover:以前算證明我也會繞來繞去12/15 01:27
Re: [其他] 二項式定理與多項式
[ Math ]1443 留言, 推噓總分: +264
作者: znmkhxrw - 發表於 2011/12/12 16:54(14年前)
184Fplover:為何以前數學家不處理 0^0 呢?12/15 01:19
185Fplover:1.有請數學史專家12/15 01:19
186Fplover:2.潔癖。用最少的公設建立數學。我們不需要0^0=112/15 01:20
187Fplover:3.主流數學家太笨了,有待神人重新賦予0^0生命12/15 01:21
188Fplover:4.數學家或許忘記了,請大家幫忙補邏輯漏洞12/15 01:22
[中學] 合成函數
[ Math ]14 留言, 推噓總分: +3
作者: lilygarfield - 發表於 2011/12/09 21:02(14年前)
7Fplover:如果 f(f(x)) = 1, f(x) 是多少?12/09 21:24
Re: [分析] 為什麼compact譯作"緊緻"?
[ Math ]7 留言, 推噓總分: +6
作者: math1209 - 發表於 2011/11/30 03:19(14年前)
5Fplover:XDDD11/30 11:32
Re: [其他] topology與text topology
[ Math ]14 留言, 推噓總分: +10
作者: xcycl - 發表於 2011/11/24 06:57(14年前)
11Fplover:那什麼是 text topology XD11/25 13:40
Re: [線代] Ax=b
[ Math ]0 留言, 推噓總分: 0
作者: cholauda - 發表於 2011/10/28 10:09(14年前)
1Fplover:T:轉置. x^T A^T = b^T. 你的問題等價於 Ax = b.10/26 18:27
[其他] 數學系賓果
[ Math ]13 留言, 推噓總分: +12
作者: paggei - 發表於 2011/10/24 23:53(14年前)
9Fplover:零條 XD10/25 10:46
[其他] 行列式和距陣應用在哪?
[ Math ]3 留言, 推噓總分: +2
作者: Emacs - 發表於 2011/10/21 15:32(14年前)
3Fplover:iPhone10/22 02:04
[微積] 請問一題 證明收斂或發散
[ Math ]8 留言, 推噓總分: +2
作者: chien0525 - 發表於 2011/10/21 00:33(14年前)
5Fplover:直覺是拆 [0,1] & [1,∞]. 可能可以用 1/x^2 或10/21 00:51
6Fplover:1/(x^2 + 1) 去比較之類的.10/21 00:51
[微積] 明年在1/3~1/9之前,我必須會的題目。
[ Math ]12 留言, 推噓總分: +3
作者: pop10353 - 發表於 2011/10/20 22:06(14年前)
9Fplover:明年1/3~1/9之前,好好學微積分,自然就會了~10/21 00:50