Symmetrisations of semigroups.
Tensor products of topological ringoids
Ternary structures and groupoids
The classifying topos of a continuous groupoid. II
The equivalence of -groupoids and crossed complexes
The equivalence of -groupoids and cubical -complexes
The groupoid of varieties of idempotent semigroups.
The lattice of convex subgroupoids of an ordered groupoid.
The low-dimensional homology of crossed modules.
The partial groupoid of idempotents of a regular semigroup.
The tensor product of groupoids
Théorie des groupoïdes symplectiques
Tolerances on poset algebras
To everz partiallz ordered set a certain groupoid is assigned. A tolerance on it is defined similarlz as a congruence, onlz the requirement of transitivitz is omitted. Some theorems concerning these tolerances are proved.
Torsion groupoids
Transformation groupoids and bundles of Banach spaces
Translations in Idempotent Groupoids
Twisted K-theory of differentiable stacks
Über die Vollständigkeit induktiver Gruppoide, die zu einer speziellen Klasse endlicher Ringe gehören
Über Ordnungsverhältnisse auf affinen Ebenen
Unified-like product of monoids and its regularity property
We first define a new monoid construction (called unified-like product ) under a unified product and the Schützenberger product . We investigate whether this algebraic construction defined with operations of the unified and Schützenberger product specifies a monoid or not. Then, we obtain a presentation of this new product for any two monoids. Finally, we define the necessary and sufficient conditions for to be regular.