Universität Regensburg   IMPRESSUM    DATENSCHUTZ
Fakultät für Mathematik Universität Regensburg
Formalization of higher category theory
Semester
WiSe 2023 / 24

Lecturer
Denis-Charles Cisinski

Type of course (Veranstaltungsart)
Vorlesung

Contents
This lecture series aims art introducing higher category theory in an axiomatic way. Instead of
building the theory of higher category theory from scratch, we will introduce higher category theory
formally (in particular very rigorously),with the aim of having access to its main features as
quickly as possible: the Yoneda embedding, the straightening/unstraightening correspondence relating
cocartesian fibrations with functors taking values in the infinity-category of infinity-categories,
the theory of Kan extensions. We will then explore its consequences: the theory of presentable
categories, topoi, stable categories, basics on K-theory. Our axiomatic approach will not only
provide tools to comprehend the important aspect of higher categories as they are used in practice
(derived algebraic geometry, homotopical algebra...) but also in more general contexts (e.g. higher
category theory internally in any higher topos) and in logic (dependent typetheory)).

Recommended previous knowledge
Prerequisites: since we will give an axiomatic approach, starting from scratch, there are no other
prerequisites than a basic knowledge of category theory (Yoneda Lemma, (co)limits, adjunctions).
However, this is an advanced course and we will assume a certain level of maturity, mathematically
speaking.

Time/Date
Tuesday 16h00-18h00, Thursday 14h00-16h00

Location
Tuesday 16h00-18h00 in M 103, Thursday 14h00-16h00 in M102

Registration
  • Registration for the exercise classes: GRIPS
  • Registration for course work/examination/ECTS: FlexNow
Course work (Studienleistungen)
  • Successful participation in the exercise classes: You should present solutions to
    the exercises at least once and have 50% of the points for the submitted solutions to
    the exercises.
Examination (Prüfungsleistungen)
  • Oral exam: Duration: 30 min., Date: by appointment, re-exam: Date:
Modules
BV, MV, MArGeo, MGAGeo, LA-GyGeo

ECTS
9
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