Selected talks, lectures, seminar presentations, and slides.

Recent talks

Coherent and ideal actions in ideally exact categories

SIC — Séminaire Itinérant de Catégories,
Louvain-la-Neuve, Belgium, 6 September 2025. Slides

The Butterfly Effect

CT & CatAlg, workshop on the occasion of Enrico Vitale’s 60th birthday,
Milano, Italy, 9 September 2024.
Slides

Relative ideals in homological categories

Dipartimento di Matematica, Università degli Studi di Milano,
22 March 2024.
Slides

Selected invited and conference talks

Cohomology 2-groups: an invitation to higher dimensional categorical algebra

GTG — Groups and Topological Groups,
Milano, Italy, 15–16 June 2023.

Groupal pseudofunctors and cohomology 2-groups

107th Peripatetic Seminar on Sheaves and Logic,
Athens, Greece, 31 March – 1 April 2023.

The wise old scientist: a commentary on ethics, old age and science

Personalised services for the Elders. Discussing design options in an interdisciplinary and intercultural way,
Villa Vigoni, 30 November 2022.

Groupal pseudofunctors

New Trends in Hopf Algebras and Monoidal Categories,
Università di Torino, 7 September 2022.
Slides

Un invito all’algebra categoriale

Seminario di Dipartimento,
Università degli Studi di Palermo, 8 June 2022.

Older selected talks

Some fibrational properties of normal monomorphisms

TAC seminar, Università di Genova,
20 February 2020 and Algebra, Logic and Topology Seminar (CMUC), 14 July 2020 Slides

Algorithms and diagrammatic reasoning

Autonomous and Algorithmic Cultures: Responsibility in the Knowledge Production and its Applications,
Villa Vigoni, 4 November 2019.

Fibred and internal aspects of distributors composition

103rd Peripatetic Seminar on Sheaves and Logic,
Masaryk University, Brno, 7 April 2018.

5th Workshop on Categorical Methods in Non-Abelian Algebra,
UCLouvain, Louvain-la-Neuve, 1–3 June 2017.
Slides

Extension theory and the calculus of butterflies

97th Peripatetic Seminar on Sheaves and Logic,
Louvain-la-Neuve, 1 February 2015.
Slides

How to get a snail from a butterfly

Séminaire Itinérant de Catégories,
Louvain-la-Neuve, 17 May 2014.
Slides

Braided and symmetric internal groupoids

CatAlg2011 — Workshop in Categorical Algebra,
Gargnano del Garda, 27 September – 1 October 2011.
Slides