/sci/ - Science & Math

>>15001884
>you don't know even the basics about physics
Correct.
>it somehow strokes your ego to pose as an expert on virgin channel
Incorrect.
I posted >>15001143 because anon coincidentally asked a question that I could immediately tell was missing context.

My bad if you're actually seething because of someone else.

>>14972685
Deadass?
You have an infinite subset [math]S[/math] of your [math]X[/math]. You want to show that it has a limit point. Choose an injection [math]a: \mathbb{N} \to S[/math]. Some subsequence of [math]a_n[/math] has a limit which is a limit point of [math]S[/math].