# Comment

### Comments

Comments in green were written by me. Comments in blue were not written by me.

subscribe

Comments in green were written by me. Comments in blue were not written by me.

PhD thesis, chapter 5

PhD thesis, chapter 4

PhD thesis, chapter 3

Inverting a matrix

PhD thesis, chapter 2

Gaussian elimination

Matrix multiplication

Christmas (2019) is over

2018-01-02I particularly liked the riddle on the 5th of December (with walking 13 units) - it was quite tricky at first, but then I solved it by seeing that you can't end up on a square an even distance away from the centre, so the possible areas are in "circles" from the center with odd side lengths . It was quite reminiscent of showing you can't cover a chessboard with dominoes when two opposite corners are removed .

on /blog/48