2 February 2026
Apollonius of Perga on beautiful theorems
The Conics of Apollonius of Perga contains the unique instance of an ancient Greek mathematician calling theorems beautiful.
1 February 2026
Perfect numbers and aesthetics
February has $28$ days, and $28$ is the second perfect number, so let’s start there.
31 December 2025
A correspondent with a bookbinding hobby emailed to say that they had printed and hand-bound the entire work.
25 October 2025
Symmetry in an Old Babylonian geometry problem
For the Mathober 2025 day 25 prompt ‘Wedge’, a historical curiosity.
9 October 2025
A four-coloured map of the counties of England
For the Mathober 2025 day 9 prompt ‘Chi’, the map that inspired the four-colour problem.
6 October 2025
For the Mathober 2025 day 6 prompt ‘Partial sum’, a diagram of a fractal curve.
4 October 2025
For the Mathober 2025 day 4 prompt ‘Strongly’, a diagram of a strongly regular graph.
3 October 2025
Rhombic polyhedra in the work of Kepler
For the Mathober 2025 day 2 prompt ‘Polyhedron’, an outline of a lesser-known use of polyhedra in Kepler’s work.
1 October 2025
Geometrical mosaic from the Alhambra
For the Mathober 2025 day 1 prompt ‘Link’, an image based on a geometrical mosaic from the Alhambra.