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Peter Arndt (Jan 27 2022 at 12:02):Since people here like graphical languages, I wanted to share this nice graphical account of homological algebra, up to spectral sequences, by Ravi Vakil.
Peter Arndt (Jan 27 2022 at 12:05):I myself have trouble understanding graphical languages (e.g. I feel quite lost with string diagrams), but I really appreciate when people try to share their mental representations of mathematical objects in this way.
Matteo Capucci (he/him) (Jan 28 2022 at 10:25):Wow, that's wonderful!!