Coxeter Collection · Mathematics ·
2016.mat.43

A cardboard model depicting a compound of five octahedra. The model is coloured in blue, green, yellow/ orange, and orange. A small metal ring permits the model to be hung. The display at the Department of Mathematics describes this model as follows: ““with the face-planes of an icosahedron, each used [Read More...]

Coxeter Collection · Mathematics ·
2016.mat.41

Coxeter Collection · Mathematics ·
2016.mat.39

Coxeter Collection · Mathematics ·
2016.mat.38

Coxeter Collection · Mathematics ·
2016.mat.32

Coxeter Collection · Mathematics ·
2016.mat.27

Coxeter Collection · Mathematics ·
2016.mat.23

An assembly of transparent yellow, purple, and green coloured plastic sticks joined at their ends by rubber bands. The description in the Department of Mathematics display reads as follows: “By moving the vertices of the octahedron towards the centre of the model one gets the octahedron inscribed in the cube, [Read More...]

Coxeter Collection · Mathematics ·
2016.mat.21

Coxeter Collection · Mathematics ·
2016.mat.19

A circular wooden frame on a wooden stand holds a wooden geometrical figure consisting of small turned spokes representing edges and small spheres representing vertices. The geometrical figure consists of wood of three colours, blond, brown, and black. The following description is assigned to Bob Rollins in 2007: “The Central [Read More...]

Coxeter Collection · Mathematics · Unidentified ·
2016.mat.74

A rectangular wooden board is divided lengthwise into three sections painted red, blue, and white respectively. Protruding from the centre each section is a dowel painted the same colour as its section. Around each down is a stack of five rings of diminishing diameter. The face of each ring is [Read More...]

Coxeter Collection · Mathematics ·
2016.mat.13

Coxeter Collection · Mathematics ·
2016.mat.9

Coxeter Collection · Mathematics ·
2016.mat.7

Coxeter Collection · Mathematics ·
2016.mat.5