Semiprime ideals of skew polynomial rings.
Semiprime SF-rings whose essential left ideals are two-sided.
Semisimple completed group rings.
Separable functors in corings.
Separable K-linear categories
We define and investigate separable K-linear categories. We show that such a category C is locally finite and that every left C-module is projective. We apply our main results to characterize separable linear categories that are spanned by groupoids or delta categories.
Separable Moduln von Algebren über Ringen.
Shelah's Singular Compactness Theorem.
Simple injective modules.
Simple modules over CC-groups and monolithic just non-CC-groups
In questo lavoro studiamo i non CC-gruppi monolitici con tutti i quozienti propri CC-gruppi, che hanno sottogruppi abeliani normali non banali.
Simple Skew Polynomial Rings
Simple submodules and multiplicities.
Single elements.
Skew polynomial rings satisfying - property.
Smash products for -sets, Clifford theory and duality theorems.
Smash products, group actions and group graded rings.
Sobre anillos de polinomios que son anillos de Bézout.
Solvable Normal Subgroups and Nilpotent Ideals in Matrix Rings.
Some characterizations of regular modules.
Let M be a left module over a ring R. M is called a Zelmanowitz-regular module if for each x ∈ M there exists a homomorphism F: M → R such that f(x) = x. Let Q be a left R-module and h: Q → M a homomorphism. We call h locally split if for every x ∈ M there exists a homomorphism g: M → Q such that h(g(x)) = x. M is called locally projective if every epimorphism onto M is locally split. We prove that the following conditions are equivalent:(1) M is Zelmanowitz-regular.(2) every homomorphism into M...
Some comments on injectivity and p-injectivity.
Some conditions on fixed rings.