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.
Some thoughts on Yoneda’s regular spans and related notions
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