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Seminar

Graduate Student Seminar: q-de Rham cohomology and Habiro rings September 25, 2026 (10:00 AM PDT - 11:00 AM PDT)
Parent Program:
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Speaker(s) Giacomo Bertizzolo (University of Toronto)
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Keywords and Mathematics Subject Classification (MSC)
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This talk introduces topological Hochschild homology and explains how filtrations on topological invariants give rise to arithmetic cohomology theories. We discuss the motivic filtration of Bhatt–Morrow–Scholze and the even filtration of Hahn–Raksit–Wilson, emphasizing their purpose and their relationship in the relevant settings. The aim is to prepare the objects and ideas needed for the final talk, rather than to develop the full machinery.

Suggested references

Bhatt–Morrow–Scholze, Topological Hochschild homology and integral p-adic Hodge theory.

Hahn–Raksit–Wilson, A motivic filtration on the topological cyclic homology of commutative ring spectra.

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