Globally Abelian transformation semigroups.
Globally determined semigroups.
Globals of completely regular periodic semigroups.
Golden section quasigroups as special idempotent medial quasigroups
Goldie's theorem for semigroups.
Good and very good magnifiers
Un elemento di un semigruppo è un elemento accrescitivo sinistro se la traslazione di , associata all'elemento , è surgettiva e non è iniettiva (E. S. Ljapin, [13], § 5). Così, per ogni elemento accrescitivo sinistro , esiste un sottoinsieme proprio di tale che la restrizione a di è biunivoca. Se è un sottosemigruppo (risp. un ideale destro) di , l'elemento accrescitivo sinistro viene detto buono (risp. molto buono) (F. Migliorini [15], [16], [17]). Utilizzando il monoide biciclico,...
Good filtrations and decomposition rules for representations with standard monomial theory.
Graded blocks of group algebras with dihedral defect groups
We investigate gradings on tame blocks of group algebras whose defect groups are dihedral. For this subfamily of tame blocks we classify gradings up to graded Morita equivalence, we transfer gradings via derived equivalences, and we check the existence, positivity and tightness of gradings. We classify gradings by computing the group of outer automorphisms that fix the isomorphism classes of simple modules.
Graded Division Algebras.
Graded monoidal categories
Graded morphisms of -modules
Let be finite dimensional -algebra which is a complete intersection, i.e. whith a regular sequences . Steve Halperin conjectured that the connected component of the automorphism group of such an algebra is solvable. We prove this in case is in addition graded and generated by elements of degree 1.
Gradients de Heegaard sous-logarithmiques d’une variété hyperbolique de dimension trois et fibres virtuelles
J. Maher a montré qu’une variété hyperbolique de dimension compacte sans bord, connexe et orientable fibre virtuellement sur le cercle si et seulement si elle admet une famille infinie de revêtements finis de genre de Heegaard borné. En s’appuyant sur la démonstration de Maher, cet article présente un théorème donnant une condition suffisante pour qu’un revêtement fini d’une variété hyperbolique compacte de dimension contienne une fibre virtuelle, qui s’exprime en fonction du degré du revêtement...
Grammaires algébriques et monoïdes simplifiables
Graph congruences and pair testing
Graph Monoids.
Graph representations of finite Abelian groups
Graphes planaires et présentations des groupes de tresses.
Graphical Regular Representations of Alternating, Symmetric, and Miscellaneous Small Groups.
Graphs and associative triples in quasitrivial groupoids
Graphs and Finite Permutation Groups.