#freedommathdance — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #freedommathdance, aggregated by home.social.
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On the theorem of Gelfand–Mazur. New blog post on Freedom Math Dance
I discuss several elementary proofs of this theorem that I learned by browsing at the online Bourbaki archives. They are due to Tornheim and Witt.
https://freedommathdance.blogspot.com/2026/04/on-theorem-of-gelfand-mazur.html
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The Klein group, the centralizer of a permutation, and its relation with the alternating group.
New blog post at #FreedomMathDance
#algebra #Vierergruppe #Klein #signature #permutation #combinatorics
https://freedommathdance.blogspot.com/2023/01/the-klein-group-and-centralizer-of.html