Interesting papers, resources, etc. (Mostly math-related.)
- Quiver: a modern commutative diagram editor.
- Gödel diffeomorphisms: the tasks of proving certain statements (e.g. the Riemann hypothesis, consistency of ZFC) turn out to be equivalent to proving certain diffeomorphisms of the torus are isomorphic to their inverses.
- Grothendieck-Serre correspondences: a collection of correspondences between Alexander Grothendieck and Jean-Pierre Serre.
- A visualization of the Hopf fibration by Niles Johnson.
- Tohoku, an enjoyably-technical, if not somewhat sensational, article about Grothendieck’s landmark Tohoku paper.
- Lose your fear of tensor products.
Biographies and obituaries, which I enjoy reading and think are mathematically valuable.