We show that any tetragonal Gorenstein integral curve is a complete intersection in its respective 3-fold rational normal scroll S, implying that the normal sheaf on C embedded in S, and in P g-1 as well, is unstable for ...

In this paper we develop a general representation theory for MV-algebras. We furnish the appropriate categorical background to study this problem. Our guide line is the theory of classifying topoi of coherent extensions ...

We consider real analytic involutive structures V, of co-rank one, defined on a real analytic paracompact orientable manifold M. To each such structure we associate certain connected subsets of M which we call the level ...

In this paper we construct an abelian category of mixed perverse sheaves attached to any realization of a Coxeter group, in terms of the associated Elias-Williamson diagrammatic category. This construction extends previous ...

In sheaf theory we have at our disposal the so called "germination process" by means of which a sheaf can be obtained, in a natural manner, from data provided by a presheaf. Essentially, "germination" is a stalk producing ...

This thesis is devoted to the study of holomorphic distributions of dimension and codimension one on smooth weighted projective complete intersection Fano three dimensional manifolds, with Picard number equal to one. We ...