24小时热门版块排行榜    

查看: 661  |  回复: 5

我本潇洒哥

禁虫 (小有名气)

本帖内容被屏蔽

» 猜你喜欢

已阅   关注TA 给TA发消息 送TA红花 TA的回帖

zaq123321

专家顾问 (著名写手)

【答案】应助回帖

感谢参与,应助指数 +1
I think the last sentence should read as "不存在使得......的开集”. Don't miss the comma ,. If that's the case, how do we understand this sentence? Suppose there is an open set V in R2 including the point f(0). Then it will look like a disk or a square around f(0). Then the intersection of V and S1 will be an arc in S1 enclosing f(0) which includes one part above f(0) and one part below f(0). But the intersection is not an open set in S1 since the open set in S1 cannot across f(0). The open set in S1 can only be [f(0), p), where p is a point on the circle, or (p,q), where p and q are two points on the circle, but q is always after p, and both points cannot pass f(0). This is my understanding and l'm not sure whether it's correct or not.

[ 发自手机版 http://muchong.com/3g ]

» 本帖已获得的红花(最新10朵)

小木虫给我温暖,给我希望,爱就要爱小木虫。
2楼2017-11-18 11:38:26
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

我本潇洒哥

禁虫 (小有名气)

送红花一朵
本帖内容被屏蔽

3楼2017-12-06 19:28:01
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

zaq123321

专家顾问 (著名写手)

【答案】应助回帖

The bold lines you draw are (p,q) l mentioned. Which sentence is not correct?

[ 发自手机版 http://muchong.com/3g ]
小木虫给我温暖,给我希望,爱就要爱小木虫。
4楼2017-12-06 20:32:08
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

我本潇洒哥

禁虫 (小有名气)

本帖内容被屏蔽

5楼2017-12-06 20:55:14
已阅   关注TA 给TA发消息 送TA红花 TA的回帖

zaq123321

专家顾问 (著名写手)

【答案】应助回帖

Okay. Point passing a point does not make sense at all. I think you understand it. That's fine. I meant the arc cannot include f(0). It's good you got what l mean.

[ 发自手机版 http://muchong.com/3g ]
小木虫给我温暖,给我希望,爱就要爱小木虫。
6楼2017-12-07 01:05:56
已阅   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 我本潇洒哥 的主题更新
信息提示
请填处理意见