問題關於Identity rotation of topology?

👨🏻‍🏫 學術台數學

ka lok

2015-12-23 7:19 am

I want a topological provement for
為何rotation by 720 degree is an identity rotation instead of 360 degree??

更新1:

有沒有什麼topological characteristics 會受影響當你把一個S1 map為一個 n=1, mobius strip?

回答 (1)

p

2015-12-23 2:38 pm

720 = 2*360,
所以 720 只是 2*360 或 2 times identity rotation

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