tilda function is non-Periodic signal
when we sample, it become periodic
time 주기 신호에서 sampling하면 각각 계수가 되어 반대 도메인이 주기가 된다!
What does tilde on top of functions mean in fourier series and fourier transforms?
For an example these in these equations for continuous time fourier series:
Does it denote that the function is periodic?
If it denotes that the function is periodic then shouldn't there be a tilde
https://math.stackexchange.com/questions/3286976/what-does-tilde-on-top-of-functions-mean-in-fourier-series-and-fourier-transform

Seonglae Cho