What I saw on the web on 2022.7.4

1. Dictionary of Mathematical Eponymy: Rice Pentagonal Tilings
   by Flying Colours Maths
   https://www.flyingcoloursmaths.co.uk/dictionary-of-mathematical-eponymy-rice-pentagons/
   the canonical example of an amateur doing serious mathematical research
   via rss
   
   
2. ArtBeats
   by shri kalpada
   https://drawbeats.com/
   a fun little sequencer
   via boing
   
   
3. Short exact sequences every mathematician should know
   by MathOverflow
   https://mathoverflow.net/questions/363720/short-exact-sequences-every-mathematician-should-know
   i almost understand SESs, and these examples don't weaken my intution around them
   via reddit