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2012


April 18, 15:00
H. P. Sankappanavar (State University of New York/CAUL)
De Morgan algebras: new perspectives and applications



March 20, 15:30
Dimitri Chikhladze (CMUC)
Monoidal structures



March 20, 14:30
Craig Pastro (Kyushu University, Japan)
Complementing comonads



February 28, 16:00
Diana Rodelo (Univ. Algarve/CMUC)
Mal'tsev categories and a generalised 3x3 Lemma



February 28, 15:00
Dominique Bourn (Univ. du Littoral, Calais, France)
Shreier Mac Lane theorem in the Mal'cev context



February 20, 16:30
Nelson Martins Ferreira (IP Leiria/CDRSP))
Topological space objects via neighbourhood systems



February 20, 15:30
Andrea Montoli (CMUC)
Semidirect products and split short five lemma in algebraic categories



February 20, 14:30
Tim Van der Linden (Univ. catholique Louvain, Belgium)
Higher central extensions via binary commutators



January 20, 15:00
Lurdes Sousa (CMUC/IP Viseu)
Well-founded and well-pointed coalgebras



2011


November 23, 15:00
Javier Gutiérrez García (UPV, Bilbao, Spain)
A Selection of Insertion-type results Extending Katetov's procedure



November 23, 16:00
Jorge Picado (Mat.FCTUC/CMUC)
Normality vs. extremal disconnectedness: two sandwich-type results for the price of one



October 25, 12:00
Marino Gran (Univ. catholique Louvain, Belgium)
The new calculus of star-relations



October 25, 14:30
Diana Rodelo (Univ. Algarve/CMUC)
Remarks on the projective covers of algebraic categories



October 25, 15:30
Nelson Martins-Ferreira (IP Leiria)
Weakly Mal'tsev categories and strong relations



October 25, 15:00
Andrea Montoli (CMUC)
Obstruction theory in action accessible categories



October 25, 15:00
Tim Van der Linden (Univ. catholique Louvain, Belgium)
Aspects of the "Smith is Huq" property



June 30, 15:30
Javier Gutiérrez García (Univ. Basque Country, Bilbao, Spain)
On monotone normality and subfitness



June 30, 14:30
Bernhard Banaschewski (McMaster University, Canada)
Baire sets and the Boolean reflection of sigma-frames



June 28, 15:30
Maria Manuel Clementino (Mat. FCTUC/CMUC)
Injectivity and the fibrewise way-below relation



June 28, 14:30
Bernhard Banaschewski (McMaster University, Canada)
Nonmeasurable cardinals and pointfree topology



March 29, 15:30
Dirk Hofmann (Univ. Aveiro)
Approaching metric domains



March 29, 14:30
Gonçalo Gutierres (Mat. FCTUC/CMUC)
Scott approach spaces



February 22, 16:30
Nelson Martins-Ferreira (IP Leiria)
Internal categorical structures in weakly Mal'tsev categories



February 22, 15:00
Andrea Montoli (CMUC)
Semidirect products in Jonsson-Tarski varieties



January 25, 16:30
Björn Gohla (U. Porto)
A mapping space for Gray-categories