Add to ORKGWe show that, under suitable left exact conditions on a re ection functor I, the construction of the associated universal I-central extension is reduced to the comprehensive factorization of a speci c internal functor. This observation produces some existence conditions which hold in particular for any re ection from a Mal'cev variety to any Birkho subvariet
AbstractLocally internal categories over an elementary topos F are regarded as categories enriched i...
In this note we prove that distributors between groupoids in a Barr-exact category epsilon form the ...
It is easy to prove that a double central extension over an object X which is initial amongst such i...
AbstractWe show that, for a regular reflection functor I between efficiently regular categories, the...
We show that, for a regular reflection functor I between efficiently regular categories, the reflect...
We show that, for a regular reflection functor I between efficiently regular categories, the reflect...
Abstract: We show that, under suitable left exact conditions on a reflection func-tor I, the constru...
The characterisation of double central extensions in terms of commutators due to Janelidze (in the ...
AbstractWe propose a theory of central extensions for universal algebras, and more generally for obj...
AbstractWe investigate internal groupoids and pseudogroupoids in varieties of universal algebras, an...
AbstractWe study how the concept of higher-dimensional extension which comes from categorical Galois...
Dedicated to Francis Borceux on the occasion of his sixtieth birthday Abstract: The characterisation...
We use the notion of universal extension in a linear abelian category tostudy extensions of variatio...
The center construction is not (classically) functorial. In this note, we specialize a universal con...
AbstractWe propose a theory of central extensions for universal algebras, and more generally for obj...
AbstractLocally internal categories over an elementary topos F are regarded as categories enriched i...
In this note we prove that distributors between groupoids in a Barr-exact category epsilon form the ...
It is easy to prove that a double central extension over an object X which is initial amongst such i...
AbstractWe show that, for a regular reflection functor I between efficiently regular categories, the...
We show that, for a regular reflection functor I between efficiently regular categories, the reflect...
We show that, for a regular reflection functor I between efficiently regular categories, the reflect...
Abstract: We show that, under suitable left exact conditions on a reflection func-tor I, the constru...
The characterisation of double central extensions in terms of commutators due to Janelidze (in the ...
AbstractWe propose a theory of central extensions for universal algebras, and more generally for obj...
AbstractWe investigate internal groupoids and pseudogroupoids in varieties of universal algebras, an...
AbstractWe study how the concept of higher-dimensional extension which comes from categorical Galois...
Dedicated to Francis Borceux on the occasion of his sixtieth birthday Abstract: The characterisation...
We use the notion of universal extension in a linear abelian category tostudy extensions of variatio...
The center construction is not (classically) functorial. In this note, we specialize a universal con...
AbstractWe propose a theory of central extensions for universal algebras, and more generally for obj...
AbstractLocally internal categories over an elementary topos F are regarded as categories enriched i...
In this note we prove that distributors between groupoids in a Barr-exact category epsilon form the ...
It is easy to prove that a double central extension over an object X which is initial amongst such i...