Gyration stability for projective planes

Gyrations are operations on manifolds that arise in geometric topology, where a manifold M may exhibit distinct gyrations depending on the chosen twisting. For a given M, we ask a natural question: do all gyrations of M share the same homotopy type regardless of the twisting? A manifold with this property is said to have gyration stability. Inspired by recent work by Duan, which demonstrated that the quaternionic projective plane is not gyration stable with respect to diffeomorphism, we explore this question for projective planes in general. We obtain a complete description of gyration stability for the complex, quaternionic, and octonionic projective planes up to homotopy.

Authors

Publication Details

Journal
Topology and its Applications
Published
2025-05-08
DOI
https://doi.org/10.1016/j.topol.2025.109420
Citations
2
Primary Topic
graph theory and CDMA systems
Type
article
Field-Weighted Citation Impact
1.46

Funders

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article

Gyration stability for projective planes

Sebastian Chenery, Stephen Theriault
2 citations
Topology and its Applications
graph theory and CDMA systems
1.46
article

Gyration stability for projective planes

Sebastian Chenery, Stephen Theriault
article en
2 citations

Abstract

Gyrations are operations on manifolds that arise in geometric topology, where a manifold M may exhibit distinct gyrations depending on the chosen twisting. For a given M, we ask a natural question: do all gyrations of M share the same homotopy type regardless of the twisting? A manifold with this property is said to have gyration stability. Inspired by recent work by Duan, which demonstrated that the quaternionic projective plane is not gyration stable with respect to diffeomorphism, we explore this question for projective planes in general. We obtain a complete description of gyration stability for the complex, quaternionic, and octonionic projective planes up to homotopy.

Topology and its ApplicationsVol. 369
Engineering and Physical Sciences Research Council
Openalex Percentile: Top 18%
graph theory and CDMA systems
1.46
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