I contributi di Gaetano Scorza alla Teoria dei Gruppi
Vengono esaminati i contributi di Gaetano Scorza (1876-1942) alla Teoria dei Gruppi.
I gruppi risolubili con duale
I gruppi semplici minimali sono individuati reticolarmente in senso stretto
Ia-Automorphisms and Permutational Wreath Products
Ideal decompositions and computation of tensor normal forms.
Ideal extensions of irreductive semigroups.
Ideal nil-extensions of semigroups with semimodular congruence lattices.
Ideal systems of intersection and product type
Ideal theory in commutative semigroups.
Ideals and Green's relations in ordered semigroups.
Ideals are greater on the left.
Ideals in selfdistributive groupoids
Products of (left) ideals in selfdistributive groupoids are studied.
Ideals in transformation semigroups
Ideals of Schur-semigroups.
Ideal-theoretic characterizations of valuation and Prüfer monoids
It is well known that an integral domain is a valuation domain if and only if it possesses only one finitary ideal system (Lorenzen -system of finite character). We prove an analogous result for root-closed (cancellative) monoids and apply it to give several new characterizations of Prüfer (multiplication) monoids and integral domains.
Idempotent Boolean matrices.
Idempotent Bounded Semi-Groups.
Idempotent cross-sections of J-classes.
Idempotent Endomorphisms on Standard Threads.
Idempotent pre-generalized hypersubstitutions of type .