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作者 WINDHEAD 在 PTT [ Math ] 看板的留言(推文), 共560則
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[代數] 請問well-defined是在?
[ Math ]10 留言, 推噓總分: +7
作者: MOONY135 - 發表於 2011/01/01 21:10(15年前)
4FWINDHEAD:比方說妳有一個函數 f: Q->Q , f(a/b)=a+b01/01 23:49
5FWINDHEAD:就不是 well-defined01/01 23:49
Re: [其他] 每個無理數都可以用有限的文字定義出來 …
[ Math ]16 留言, 推噓總分: +3
作者: znmkhxrw - 發表於 2010/12/28 23:41(15年前)
11FWINDHEAD:你這個是國語文問題,不是數學問題。12/29 00:07
Re: [中學] 今天聽到的一個很重大的消息
[ Math ]9 留言, 推噓總分: +9
作者: math1209 - 發表於 2010/05/06 02:04(15年前)
6FWINDHEAD:推..想到N年前敗了Falconer那本,結果沒看多少orz05/06 14:25
[轉錄] 台大數學陳金次老師訪談
[ Math ]24 留言, 推噓總分: +20
作者: hanabiz - 發表於 2010/05/01 08:50(16年前)
3FWINDHEAD:哇我微積分跟高微都是他教的耶XD05/01 09:21
[建議] 發文的時候該注意的地方
[ Math ]28 留言, 推噓總分: +21
作者: mmmaaatttttt - 發表於 2010/04/08 21:23(16年前)
16FWINDHEAD:推 建議縮網址的時候也保留原網址~因縮址有期限04/09 03:48
Re: 一個困惑很久的數學物理問題
[ Math ]0 留言, 推噓總分: 0
作者: Lindemann - 發表於 2009/08/19 01:18(16年前)
1FWINDHEAD:那句話怪怪的(或許是翻譯的問題),不過我猜可以這樣看:08/18 03:03
2FWINDHEAD:考慮兩個 Torus T_1 與 T_2 , T_1 是三維空間中甜甜圈面08/18 03:04
3FWINDHEAD: T_2 是貪食蛇. 他們"都是Torus", 但 T_1 有曲率變化08/18 03:05
4FWINDHEAD:而 T_2 的曲率是 0 , 這表示"度量"並沒有生活經驗中08/18 03:05
5FWINDHEAD:看上去的那麼單純.08/18 03:06
[公告] crowbook板友-推文引戰.水桶一週
[ Math ]40 留言, 推噓總分: +27
作者: tigerbojo - 發表於 2009/08/12 12:33(16年前)
9FWINDHEAD:南化水庫正夯08/12 14:49
Re: [微積]要怎麼算分部積分??
[ Math ]7 留言, 推噓總分: +7
作者: calvin4 - 發表於 2009/08/03 00:33(16年前)
1FWINDHEAD:推認真教學文08/03 00:45
[競選]關於板主競選,我的政見
[ Math ]21 留言, 推噓總分: +10
作者: tigerbojo - 發表於 2009/07/17 08:39(16年前)
2FWINDHEAD:推你的"不砍文" 不砍文才能讓爭議公諸於世07/17 10:00