Forgot password?
 Create new account
View 97|Reply 1

[几何] 有没有空间中两个无理数度旋转的乘积为有理数度旋转

[Copy link]

3151

Threads

8498

Posts

610K

Credits

Credits
66208
QQ

Show all posts

hbghlyj Posted at 2025-1-20 23:20:45 |Read mode
有没有空间中两个无理数度旋转的乘积为有理数度旋转

3151

Threads

8498

Posts

610K

Credits

Credits
66208
QQ

Show all posts

 Author| hbghlyj Posted at 2025-1-20 23:21:54
取决于以下问题:是否存在 $\alpha$,$\alpha/\pi$ 是无理数,以及一个 $\beta$,$\beta/\pi$ 是有理数,使得 $\cos(\beta)= \cos^2(\alpha)$

手机版Mobile version|Leisure Math Forum

2025-4-21 14:16 GMT+8

Powered by Discuz!

× Quick Reply To Top Return to the list