activity
20222026
most citedStraightening for lax transformations and adjunctions of -categories

1 citations · 1 across the 7 of their papers we have counts for

collaborators

8 papers

math.AT2026

Free bifibrations of -categories, 2-simplicial objects and the walking adjunction

Fernando Abellán

In this work, we develop a fibrational approach to freely adjoining adjoints in an -category. We construct the universal bifibration obtained from a cocartesian fibrati…

math.CT2026

Sphericalization and the Universal Spherical Adjunction

Fernando Abellán, Jonte Gödicke

For every adjunction of stable -categories -- or more generally, in any locally stable -category -- we give a simple procedure for inverting the twist and cotwi…

math.CT2026

Free fibrations, lax colimits and Kan extensions for -categories

Fernando Abellán, Rune Haugseng, Louis Martini

In the first part of this paper we study fibrations of -categories. We give a simple characterization of such fibrations in terms of a certain square being a pullback,…

math.CT2024

-Topoi and descent

Fernando Abellán, Louis Martini

We set the foundations of a theory of Grothendieck -topoi based on the notion of fibrational descent, which axiomatizes both the existence of a classifying object for f…

math.CT2024★ 1 cited

Straightening for lax transformations and adjunctions of -categories

Fernando Abellán, Andrea Gagna, Rune Haugseng

We prove an unstraightening result for lax transformations between functors from an arbitrary -category to that of -categories. We apply this to study parti…

math.CT2023

Comparing lax functors of -categories

Fernando Abellán

In this work, we study oplax normalised functors of -categories. Our main theorem is a comparison between the notion of oplax normalised functor of scaled simplicial se…

math.AT2023

On local fibrations of -categories

F. Abellán

In this work we provide a model-independent notion of local fibrations of -categories which generalises the well-known theory of locally coCartesian fibrations of $(\in…

math.AT2022

2-Cartesian fibrations II: A Grothendieck construction for -bicategories

Fernando Abellán, Walker H. Stern

In this work, we conclude our study of fibred -bicategories by providing a Grothendieck construction in this setting. Given a scaled simplicial set (which need not be f…