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The dodecahedral graph is the Platonic graph corresponding to the connectivity of the vertices of a dodecahedron, illustrated above in four embeddings. The left embedding ...

Any link can be represented by a closed braid.

The number of empty neighbors of a cluster.

A graph cycle.

e is transcendental.

The double-struck capital letter I, I, is a symbol sometimes used instead of Z for the ring of integers. In contrast, the lower case symbol i is used to refer to the ...

Definitions about a set which depend on the entire set.

A general concept in category theory involving the globalization of local morphisms.

The appropriate notion of integer for surreal numbers.

A sum over all cluster perimeters.