English

Six-Functor Formalisms II : The $\infty$-categorical compactification

Algebraic Geometry 2025-01-30 v2 Category Theory

Abstract

This paper is part of a series of articles in which we reproduce the statements regarding the abstract six-functor formalism developed by Liu-Zheng. In this paper, we prove a theorem, which is an \infty-categorical version for defining the exceptional pushforward functor in an abstract-six functor formalism. The article describes specific combinatorial simplicial sets related to compactifications and pullback squares. This theorem plays a key role in constructing the abstract six-functor formalism, which will be discussed in the forthcoming article.

Keywords

Cite

@article{arxiv.2412.03231,
  title  = {Six-Functor Formalisms II : The $\infty$-categorical compactification},
  author = {Chirantan Chowdhury},
  journal= {arXiv preprint arXiv:2412.03231},
  year   = {2025}
}

Comments

Typos and minor mistakes in Proof of Theorem 4.2.1 and Theorem 5.2.1 have been fixed

R2 v1 2026-06-28T20:22:47.926Z