A Two Dimensional Version of the Goldschmidt - Sims
نویسنده
چکیده
The Goldschmidt-Sims conjecture asserts that there is a nite number of (conjugacy classes of) edge transitive lattices in the automorphism group of a regular tree with prime valence. We prove a similar theorem for irreducible lattices, transitive on the 2-cells of the product of two regular trees of prime valences.
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