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Examples of disk algebras
Published 22 Feb 2023 in math.AT and math.KT | (2302.11702v2)
Abstract: We produce refinements of the known multiplicative structures on the Brown--Peterson spectrum $BP$, its truncated variants $BP\langle n \rangle$, Ravenel's spectra $X(n)$, and evenly graded polynomial rings over the sphere spectrum. Consequently, topological Hochschild homology relative to these rings inherits a circle action.
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