https://www.youtube.com/watch?v=4kTD5KkCMQw
Make_stone_look_smooth.meme
Make_stone_look_smooth.meme
YouTube
Mollifiers
In this video I talk about mollifiers, which is a super neat way of turning any function into a smooth one. This is used in image processing, as well as PDEs. Using this, I also show that harmonic functions must be infinitely differentiable, which is a nice…