Steenrod closed parameter ideals in the mod-$2$ cohomology of $A_4$ and $SO(3)$
Abstract
In this paper, we classify the parameter ideals in $H^*(BA_4;\mathbb{F}_2)$ and in the Dickson algebra $H^*(BSO(3);\mathbb{F}_2)$ that are closed under Steenrod operations. Consequently, we obtain restrictions on the dimensions $n,m$ for which $A_4$ (and $SO(3)$) can act freely on $S^n\times S^m$.
- Publication:
-
arXiv e-prints
- Pub Date:
- June 2022
- DOI:
- arXiv:
- arXiv:2206.11802
- Bibcode:
- 2022arXiv220611802R
- Keywords:
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- Mathematics - Algebraic Topology;
- Mathematics - Commutative Algebra;
- 55M35 (Primary) 13C05;
- 55S10;
- 57S17;
- 20J06 (Secondary)
- E-Print:
- 37 pages, 1 figure