A note on separability in outer automorphism groups

Abstract We give a criterion for separability of subgroups of certain outer automorphism groups. This answers questions of Hagen and Sisto, by strengthening and generalizing a result of theirs on mapping class groups.

Authors

Francesco Fournier-Facio (ORCID: https://orcid.org/0000-0003-0386-2071)

Institutions

University of Cambridge (GB)

Publication Details

Journal: Proceedings of the Edinburgh Mathematical Society
Published: 2025-02-04
DOI: https://doi.org/10.1017/s0013091525000045
Primary Topic: Geometric and Algebraic Topology
Type: article
Field-Weighted Citation Impact: 0.00

Controls

|||

ALL TIME

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

article

A note on separability in outer automorphism groups

Francesco Fournier-Facio

Feb 4, 2025

Proceedings of the Edinburgh Mathematical Society

Geometric and Algebraic Topology

article

A note on separability in outer automorphism groups

Francesco Fournier-Facio

February 4, 2025article en

Abstract

Proceedings of the Edinburgh Mathematical SocietyVol. 68(3)

University of Cambridge (GB)

Openalex Percentile: Top 95%

Geometric and Algebraic Topology

DOI Open Access PDF OpenAlex

AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.

A note on separability in outer automorphism groups — Francesco Fournier-Facio · Proceedings of the Edinburgh Mathematical Society (2025) | TGRS Research Map | TGRS