| Publication | Date of Publication | Type |
|---|
| CONDITIONAL FLATNESS, FIBERWISE LOCALIZATIONS, AND ADMISSIBLE REFLECTIONS | 2024-03-25 | Paper |
| Groupoids and skeletal categories form a pretorsion theory in \(\mathsf{Cat}\) | 2023-06-05 | Paper |
| Ideals and Congruences in L-algebras and Pre-L-algebras | 2023-05-30 | Paper |
| Central extensions of preordered groups | 2023-03-07 | Paper |
| The stable category of preorders in a pretopos. II: The universal property | 2022-10-21 | Paper |
| Pretorsion theories in lextensive categories | 2022-05-23 | Paper |
| The stable category of preorders in a pretopos. I: General theory | 2022-04-13 | Paper |
| An Introduction to Regular Categories | 2022-03-01 | Paper |
| On the Naturalness of Mal’tsev Categories | 2021-12-08 | Paper |
| https://portal.mardi4nfdi.de/entity/Q5004659 | 2021-08-03 | Paper |
| Unusual spectral categories | 2021-07-02 | Paper |
| Torsion theories and coverings of preordered groups | 2021-03-03 | Paper |
| Action representability of the category of internal groupoids | 2021-02-09 | Paper |
| What is the Spectral Category? | 2020-09-01 | Paper |
| Pretorsion theories in general categories | 2020-08-28 | Paper |
| Galois theory and the categorical Peiffer commutator | 2020-05-27 | Paper |
| Facets of congruence distributivity in Goursat categories | 2020-05-04 | Paper |
| Monoidal characterisation of groupoids and connectors | 2020-04-06 | Paper |
| A new Galois structure in the category of internal preorders | 2020-03-10 | Paper |
| Split extensions and semidirect products of unitary magmas | 2020-03-06 | Paper |
| A semi-abelian extension of a theorem by Takeuchi | 2019-07-03 | Paper |
| Variations of the shifting lemma and Goursat categories | 2019-02-01 | Paper |
| Some remarks on protolocalizations and protoadditive reflections | 2019-01-04 | Paper |
| Split extension classifiers in the category of cocommutative Hopf algebras | 2018-11-01 | Paper |
| Higher commutator conditions for extensions in Mal'tsev categories | 2018-10-15 | Paper |
| A relative monotone-light factorization system for internal groupoids | 2018-10-15 | Paper |
| Semi-abelian exact completions | 2018-01-15 | Paper |
| Some remarks on connectors and groupoids in Goursat categories | 2017-10-12 | Paper |
| Beck-Chevalley condition and Goursat categories | 2017-06-09 | Paper |
| Epireflective subcategories and formal closure operators | 2017-05-10 | Paper |
| A characterization of central extensions in the variety of quandles | 2016-05-26 | Paper |
| A torsion theory in the category of cocommutative Hopf algebras | 2016-05-12 | Paper |
| Semi-localizations of semi-abelian categories | 2016-03-17 | Paper |
| Closure operators in the category of quandles | 2016-02-18 | Paper |
| Some aspects of semi-abelian homology and protoadditive functors | 2016-02-04 | Paper |
| On the characterization of J\'onsson-Tarski and of subtractive varieties | 2016-01-18 | Paper |
| Protoadditive functors, derived torsion theories and homology | 2015-04-24 | Paper |
| The cuboid lemma and Mal'tsev categories | 2015-02-05 | Paper |
| On factorization systems for surjective quandle homomorphisms | 2015-01-23 | Paper |
| Weighted commutators in semi-abelian categories | 2014-09-08 | Paper |
| On 2-star-permutability in regular multi-pointed categories | 2014-09-05 | Paper |
| Some remarks on pullbacks in Gumm categories | 2014-08-06 | Paper |
| Star-regularity and regular completions | 2014-04-30 | Paper |
| Monotone-light factorisation systems and torsion theories | 2013-12-10 | Paper |
| Effective descent morphisms in star-regular categories | 2013-11-27 | Paper |
| \(3 \times 3\) lemma for star-exact sequences | 2012-11-16 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2919779 | 2012-10-22 | Paper |
| A description of the fundamental group in terms of commutators and closure operators | 2012-10-16 | Paper |
| A good theory of ideals in regular multi-pointed categories | 2012-10-16 | Paper |
| A new characterisation of Goursat categories | 2012-09-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3552031 | 2010-04-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3646050 | 2009-11-18 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3597353 | 2009-02-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3539845 | 2008-11-19 | Paper |
| On closure operators and reflections in Goursat categories | 2008-10-23 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3503830 | 2008-06-09 | Paper |
| Protolocalisations of homological categories | 2008-06-05 | Paper |
| Higher Hopf formulae for homology via Galois theory | 2008-03-05 | Paper |
| On the second cohomology group in semi-abelian categories | 2007-12-06 | Paper |
| On low-dimensional homology in categories | 2007-02-14 | Paper |
| Torsion theories in homological categories | 2006-12-07 | Paper |
| Torsion theories and Galois coverings of topological groups | 2006-12-07 | Paper |
| Precrossed modules and Galois theory | 2006-05-29 | Paper |
| Special reflexive graphs in modular varieties | 2006-01-06 | Paper |
| Centrality and connectors in Maltsev categories. | 2005-04-19 | Paper |
| Galois theory and double central extensions | 2005-04-05 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4663627 | 2005-04-04 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4663633 | 2005-04-04 | Paper |
| Normal Sections and Direct Product Decompositions | 2005-01-24 | Paper |
| https://portal.mardi4nfdi.de/entity/Q3156497 | 2005-01-10 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4464695 | 2004-05-27 | Paper |
| Commutators and central extensions in universal algebra | 2003-02-05 | Paper |
| Central extensions in semi-abelian categories | 2002-12-02 | Paper |
| https://portal.mardi4nfdi.de/entity/Q2762222 | 2002-01-08 | Paper |
| Central extensions and internal groupoids in Maltsev categories | 2001-12-09 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4527268 | 2001-02-08 | Paper |
| Internal categories in Mal'cev categories | 2000-06-14 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4936006 | 2000-01-20 | Paper |
| https://portal.mardi4nfdi.de/entity/Q4230985 | 1999-08-17 | Paper |
