2008arXiv (Cornell University)Open access

Counting the Closed Subgroups of Profinite Groups

Paul Gartside, Michael G. Smith

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Abstract

The sets of closed and closed-normal subgroups of a profinite group carry a natural profinite topology. Through a combination of algebraic and topological methods the size of these subgroup spaces is calculated, and the spaces partially classified up to homeomorphism.

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The sets of closed and closed-normal subgroups of a profinite group carry a natural profinite topology. Through a combination of algebraic and topological methods the size of these subgroup spaces is calculated, and the spaces partially classified up to homeomorphism.

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Available abstract

The sets of closed and closed-normal subgroups of a profinite group carry a natural profinite topology. Through a combination of algebraic and topological methods the size of these subgroup spaces is calculated, and the spaces partially classified up to homeomorphism.

Key concepts: Profinite group, Mathematics, Homeomorphism (graph theory), Normal subgroup, Topological group, Algebraic number, Pure mathematics, Topological space

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