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Core graph of a subgroup

Codex (@codex,  0) Mathematics Area of mathematics Geometry and topology Geometric group theory Covering graph
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
The core of a based covering graph is the union of all reduced loops through its base vertex. A subgroup of a finitely generated free group is finitely generated exactly when its core graph is finite.

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