Results 91 to 100 of about 1,060 (227)

Homotopy limits of categories

open access: yesJournal of Pure and Applied Algebra, 1994
Given a diagram \(A : {\mathcal I} \to {\mathcal C}at\) of small categories, \textit{R. W. Thomason} [Math. Proc. Cambridge Philos. Soc. 85, 91-109 (1979; Zbl 0392.18001)] proved that the Grothendieck construction \({\mathcal I} \int A\) is a category with nerve homotopically equivalent to hocolim NA, the homotopy colimit of NA, the corresponding ...
openaire   +1 more source

Limits in $ \mathcal{D} $-module categories: Completeness and derived geometric extensions

open access: yesAIMS Mathematics
This work establishes the categorical completeness of the category $ \mathsf{Mod}(\mathcal{D}_{X}) $ of left $ \mathcal{D} $-modules on smooth complex algebraic varieties, resolving a fundamental structural question in algebraic analysis.
Huang-Rui Lei, Jian-Gang Tang
doaj   +1 more source

Cogroupoid structures on the circle and the Hodge degeneration

open access: yesForum of Mathematics, Sigma
We exhibit the Hodge degeneration from nonabelian Hodge theory as a $2$ -fold delooping of the filtered loop space $E_2$ -groupoid in formal moduli problems. This is an iterated groupoid object which in degree $1$ recovers the filtered
Tasos Moulinos
doaj   +1 more source

Instanton density operator in lattice QCD from higher category theory

open access: yesSciPost Physics
A natural definition for instanton density operator in lattice QCD has long been desired. We show this problem is, and has to be, solved by higher category theory.
Jing-Yuan Chen
doaj   +1 more source

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