A smooth, projective surface S of general type is said to be a standard isotrivial fibration if there exist a finite group G acting faithfully on two smooth projective curves C and F so that S is isomorphic to the minimal desingularization of T := (C × F)/G. If T is smooth then S = T is called a quasi-bundle. In this paper we classify the standard isotrivial fibrations with pg = q = 1 which are...

The effects of parental divorce on the levels of aggression, hostility, and anxiety in children, as measured by the Rorschach test, together with the type and direction of aggression, as measured by the Rosenzweig Picture-Frustration (P-F) Study, were studied. The Rorschach and the Rosenzweig P-F study were administered to a nonclinical sample of 108 Swedish children ranging in age from 10 to 1...

‎Let $C$ be a semidualizing module‎. ‎We first investigate the properties of‎ ‎finitely generated $G_C$-projective modules‎. ‎Then‎, ‎relative to $C$‎, ‎we introduce and study the rings over which‎ ‎every submodule of a projective (flat) module is $G_C$-projective (flat)‎, ‎which we call $C$-Gorenstein (semi)hereditary rings‎. ‎It is proved that every $C$-Gorenstein hereditary ring is both cohe...

Let $R$ be a commutative Noetherian ring. We prove that  over a local ring $R$ every finitely generated $R$-module $M$ of finite Gorenstein projective dimension has a Gorenstein projective cover$varphi:C rightarrow M$ such that $C$ is finitely generated and the projective dimension of $Kervarphi$ is finite and $varphi$ is surjective.

A smooth, projective surface S of general type is said to be a standard isotrivial fibration if there exist a finite group G which acts faithfully on two smooth projective curves C and F so that S is isomorphic to the minimal desingularization of T := (C × F)/G. If T is smooth then S = T is called a quasi-bundle. In this paper we classify the standard isotrivial fibrations with pg = q = 1 which...