hepsilon-delta

@hepsilon-delta.bsky.social

181 Followers 171 Following

Spouse and parent. Mathematics at University of Aberdeen. Algebraic topology, homological stability, magnitude homology. Collector of houseplants, yo-yos, hobbies.

Scottish Neolithic carved stone ball. (Ashmolean museum AN1927.2727 or AN1927.2730) Carved from red stone, about the size of a tennis ball, and decorated with 6 large raised discs (arranged like the faces of a cube) and 8 raised triangles (arranged like the vertices of the cube).