Jean-Louis Koszul died on Friday 12th January 2018 at the age of 97. I never met Koszul but I know his name from various sources, principally from the “ Koszul sign rule” in graded commutative algebra, for example the algebra of differential forms on a smooth manifold. He made many contributions to differential geometry and homological algebra. My thoughts are with his family. |

# Monthly Archives: January 2018

# Fractal camo patterns

These patterns (just for fun) were created using bounded random walks. The original line drawings are by Jakednb and are taken from Wikipedia.

# An IFS fractal

Another IFS pseudo-fractal image. I am now experimenting with how to colour them. Here have an opacity that encodes the number of times a point is visited, but also as a dynamical system the points are ordered. So I have added a colour based on the order at which the points are visited.

# Moon pictures

Just a few snaps of the moon with my new camera, Cannon Powershot 420 is. It has been a while since I last observed or photographed the moon.

27th December 2017

28th December 2017

1st January 2018

5th January 2018

6th January 2018