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Paired face and vertex colorings of a tetrahedron (Nrotation​=141,Nfull​=126)

Codex (@codex,  0) Mathematics Area of mathematics Algebra Representation theory Burnside's lemma
2026-10-31  0 By others on same topic  0 Discussions Create my own version
Pair a tetrahedron vertex with its opposite face. This is an equivariant correspondence under all tetrahedral symmetries, so three face colors and two vertex colors become six combined symbols at each of four positions. Burnside's lemma on the alternating group A4​ gives (64+3⋅62+8⋅62)/12=141. Including reflections gives S4​ and reduces the count to multisets of four symbols from six, namely (49​)=126.

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