On the Residue Sequence in Logarithmic Topological Cyclic Homology

Tommy Lundemo

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arXiv · 2506.14545

On the Residue Sequence in Logarithmic Topological Cyclic Homology

Tommy Lundemo

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Abstract

As a localizing invariant, THH participates in localization sequences of cyclotomic spectra. We resolve a conjecture of Rognes by relating these to residue sequences in logarithmic THH. Consequently, logarithmic THH, TR, and TC serve as strict generalizations of the constructions of Hesselholt--Madsen and Blumberg--Mandell, which moreover enjoy localization sequences without the regularity hypotheses usually required for d\'evissage. Combined with work of Ramzi--Sosnilo--Winges, our results imply that there exists a stable infinity-category C such that THH(C), TR(C), and TC(C) realize the relevant logarithmic term for specific log structures, such as the natural ones on discrete valuation rings, connective complex K-theory, and truncated Brown--Peterson spectra. Finally, we conjecture that the category C can be chosen to reflect the additional structure present on the logarithmic terms, and we give evidence for this in the case of discrete valuation rings.

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Tommy Lundemo. 2025-06-17. On the Residue Sequence in Logarithmic Topological Cyclic Homology. https://arxiv.org/abs/2506.14545

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