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arxiv 2310.02348 v2 pith:6MQCEVN2 submitted 2023-10-03 math.AT math.KT

Relative cyclotomic structures and equivariant complex cobordism

classification math.AT math.KT
keywords equivariantspectrumcobordismcommutativecomplexcyclotomicmathbbrelative
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We describe a structure on a commutative ring (pre)cyclotomic spectrum $R$ that gives rise to a (pre)cyclotomic structure on topological Hochschild homology ($THH$) relative to its underlying commutative ring spectrum. This lets us construct $TC$ relative to $R$, denoted $TC^{R}$, and we prove some descent results relating $TC^{R}$ and $TC$. We explore several examples of this structure on familiar $\mathbb{T}$-equivariant commutative ring spectra including the periodic $\mathbb{T}$-equivariant complex cobordism spectrum $MUP_{\mathbb{T}}$ and a new (connective) equivariant version of the complex cobordism spectrum $MU$.

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Cited by 3 Pith papers

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