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ВИДЕОТЕКА |
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Amalgamations and automorphism groups D. Wright Department of Mathematics, Washington University in St. Louis |
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Аннотация: We review some facts about automorphism groups over polynomial rings. It is shown the the tame subgroup of the group of polynomials automorphisms of affine 3-space can be realized as the product of three subgroups, amalgamated along pairwise intersections, in a manner that generalizes the well-known amalgamated free product structure in dimension 2. The result follows from the defining relations for the tame subgroup given by U. U. Umirbaev. Язык доклада: английский |