Hi! I’m Jaldert Rombouts and here I write about my interests.

Cube Calendar

I ran into a fun little day-indicator that is made from two cubes with Arabic numerals (0, 1, …). I think this is fun because it seems impossible to create all 31 numbers (01, …, 31) with only two cubes.

Rotating a matrix

This is a small problem with an interesting link to geometry.