Fei Ren

collaborators

Showing math.AGShow all

3 papers · 1 filter

math.AG2026

Coherent six-functor formalisms: Pro vs Solid

Fei Ren

In the classical theory for coherent sheaves, the only missing piece in the Grothendieck six-functor formalism picture is $j_{!}$ for an open immersion $j$ . Towards fixing this gap,…

math.AG2025

Structure theorem for log de Rham-Witt sheaves with vanishing

Fei Ren

We prove an elegant structure theorem for log de Rham-Witt sheaves with vanishing along an effective Cartier divisor $D$ defined in arXiv:2403.18763, answering a question of Shuji…

math.AG2024

Additive cycle complex and coherent duality

Fei Ren

Let $k$ be a field of positive characteristic $p$ , and $X$ be a separated of finite type $k$ -scheme of dimension $d$ . We construct a cycle map from the additive cycle complex to th…