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DeFENS, Università degli Studi di Milano, Italy
CMUC · Online ALT archive
Past online seminars
Talks and resources from the online CMUC Seminar on Algebra, Logic and Topology.
Centre for Mathematics
University of Coimbra
Past seminars
2026
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A. Razmadze Mathematical Institute of Tbilisi State University, Georgia
Effective (co)descent morphisms in some topological categories
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National Institute of Informatics, Japan
Nerves of T-categories and powerful T-functors
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Research Institute for Mathematical Sciences, Kyoto University, Japan
Coinductive reasoning for parametrized functors and monads
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University of Manchester, UK
On the commuting tensor product of symmetric multicategories and their bimodules
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Mount Allison University, Canada
Ehresmann connections in a tangent category
2025
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UCLouvain, Belgium
N-fold groupoids and n-groupoids in regular Mal’tsev categories
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Stellenbosch University, South Africa
When are exact categories co-exact?
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Universidade de Santiago de Compostela, Spain
Noncommutative Poisson structure and invariants of matrices
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Macquarie University, Australia
Drazin Inverses in (Dagger) Categories
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University of the Western Cape, South Africa
A general approach to pointfree T0 spaces
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Université catholique de Louvain & Vrije Universiteit Brussel, Belgium
Self-dual aspects of semi-abelian categories
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York University, Canada
Norms for vectors, linear operators and morphisms of categories, and Cauchy convergence for them
2022
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Stellenbosch University, South Africa
On categorical conditions in the semi-abelian context
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Mount Allison University, Canada
Algebraic geometry and tangent categories
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Universidad Nacional de La Plata, Argentina
The definition of pre-cohesive map in perspective
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University of Oxford, UK
When measurable spaces don't have enough points
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Université catholique de Louvain, Belgium
Associativity and the co-smash product
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Dalhousie University, Canada
An invitation to double categories and double fibrations
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Stellenbosch University, South Africa
In search for an algebraically sound notion of a subobject in the dual of a topos
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Université Côte d’Azur, France
Sublocales of the frame of fitted sublocales
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University of Cape Town, South Africa
Central extensions of associative algebras
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York University, Canada
Topology for internal pre-orders: focus on complete regularity
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Masaryk University, Brno, Czech Republic
Weak factorization systems in locally presentable categories
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2021
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Technische Universität Braunschweig, Germany
Monads on the category of metric spaces
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Polytechnic Institute of Viseu and CMUC, Portugal
Lax epimorphisms and the associated factorization
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CMUC, University of Coimbra, Portugal
A new diagonal separation and its relations with the Hausdorff property
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UCLouvain, Belgium
On the ternary commutator I: Exact Mal'tsev categories
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Masaryk University, Czech Republic
An orthogonal approach to algebraic weak factorisation systems
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Université Côte d’Azur, France
Esakia duality and its connection with pointfree Pervin spaces
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Stellenbosch University, South Africa
Deciding implications of matrix properties
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CMUC, University of Coimbra, Portugal
Lax factorisation systems and categories of partial maps
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Stellenbosch University, South Africa
The first cohomology object in semi-abelian categories
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Université du Littoral, France
Congruence modular variety and algebraic crystallography
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UCLouvain, Belgium
Categorical aspects of the non-abelian tensor product
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Technische Universität Braunschweig, Germany
Algebraically cocomplete categories
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CMA, NOVA University of Lisbon, Portugal
Context-free word problem semigroups
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CMUC, University of Coimbra, Portugal
Zariski-type spectra of localic ring-like structures
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University of Cape Town, South Africa
Abstract and concrete spectral spaces
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University of Cape Town, South Africa
A new approach to S-protomodular categories
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University of Cambridge, UK
Relaxed actions of monoids: Towards a new cohomology theory
2020
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CMUC, University of Coimbra, Portugal
Characterizations of Normality given by C-, C*- and z-embedded sublocales
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University of the Basque Country, Bilbao, Spain
Sublocales as parts
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University of Cape Town, South Africa
Characterization of coextensive varieties of universal algebras
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Stellenbosch University, South Africa
The theory of exactness properties: recent developments and work in progress
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CMUC, University of Coimbra, Portugal
The Karoubi envelope of the mirage of a subshift
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Heriot-Watt University, UK
The polycyclic inverse monoids and the Thompson groups revisited
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Università degli Studi di Palermo, Italy
Some fibrational properties of normal monomorphisms
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Masaryk University, Czech Republic
Characterizations of lax orthogonal factorization systems
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Università degli Studi di Milano, Italy
Intrinsic Schreier split extensions and intrinsic Schreier special objects
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Johns Hopkins University, USA
Double categories of open dynamical systems
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CMUC, University of Coimbra, Portugal
From preordered groups to quantale-enriched groups
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CDRSP, Polytechnic Institute of Leiria, Portugal