Topology begins with the simple notion of an open set living in a Topological Space and beautifully generalizes to describing shapes in various dimensions. So what exactly is a Topological Space?
Music by Vincent Rubinetti
Download the music on Bandcamp:
https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown
Stream the music on Spotify:
https://open.spotify.com/playlist/3zNK20qC96mVSww60lVi1k