Shubhankar Sahai

activity

20182026

collaborators

Showing math.AGShow all

4 papers · 1 filter

math.AG2026

Tannakian reconstruction in derived algebraic geometry

Joshua Mundinger, Shubhankar Sahai

We prove analogues of Tannakian reconstruction theorems of Lurie and Bhatt--Halpern-Leistner in \emph{derived} algebraic geometry, where the basic geometric objects are spectra of…

math.AG2026

Derived algebras on formal stacks and prismatic gauges

Shubhankar Sahai

This paper studies how the theory of derived algebras (in the sense of Bhatt-Mathew and Raksit) interacts with formal derived geometry, specifically the formal derived stacks which…

math.AG2025

De Rham affineness of the Nygaard filtered prismatization in positive characteristic

Shubhankar Sahai

Let $k$ be a perfect ring of characteristic $p > 0$ , and let $R$ be an animated $k$ -algebra. This note aims to show that the Nygaard filtered prismatization $R^{Nyg}$ of $R$ …

math.AG2024

Duality of differential operators and algebraic de Rham cohomology

Caleb Ji, Casimir Kothari, Oliver Li +3

Given a smooth proper morphism $f : X \to S$ , we introduce a certain derived category where morphisms are permitted to be $O_{S}$ -linear differential operators.…