Posts by Category



A while back, I have, without much thought, decided to solve every problem in Introduction to Algorithms by Cormen, Leiserson, Rivest, and Stein, commonly kn...


Generalizations of the real and complex number systems

Group actions

An introduction to the theory of group actions, covering examples, various counting principles, and Sylow’s theorems.

How to read commutative diagrams

An introduction to commutative diagrams, a compact language for describing algebraic objects and structure-preserving maps between them.

Naïve set theory

A quick overview of elementary set theory, covering the basic terminology, relations and functions, equivalence relations and quotient sets, cartesian produc...

Killing the hydra

On Kirby–Paris Hydra game, which involves killing off a particularly vicious modern variant of the Lernaean Hydra

Back to top ↑