Related papers: Schr\"oder e la Teoria dei Gruppi
Expanded lecture notes. Preliminary version, comments are welcome.
This is a long introduction to the theory of "branch groups": groups acting on rooted trees which exhibit some self-similarity features in their lattice of subgroups.
We develop a cohomology theory of groups based on partial actions and explore its relation with the partial Schur multiplier as well as with cohomology of inverse semigroups.
These are extended notes of a course given at Tulane University for the 2015 Clifford Lectures. Their aim is to present structure results for group schemes of finite type over a field, with applications to Picard varieties and automorphism…
I offer a brief summary, with commentary, of theoretical contributions to Moriond QCD 2008.
In this paper we introduce the concept of generalized vector groupoid. Several properties of them are established.
This is an account of the theory of inverse semigroups, assuming only that the reader knows the basics of semigroup theory.
This paper is a short introduction to orthogonal polynomials, both the general theory and some special classes. It ends with some remarks about the usage of computer algebra for this theory.
The note complements topological aspects of the theory of chiral algebras.
In this course we introduce the main notions relative to the classical theory of modular forms. A complete treatise in a similar style can be found in the author's book joint with F. Str{\"o}mberg [1].
This very short correction notes a gap in an argument of an earlier paper, and also provides a theorem of similar flavor to the main result of that paper.
This is brief and hopefully friendly, with basic notions, a few different perspectives, and references with more information in various directions.
In this paper, we study connections between the structure of a group and the structure of the group (under pointwise product) of its polynomial functions.
Observations on rational Chow groups and cycle class maps in equivariant contexts.
A new picture of Quantum Mechanics based on the theory of groupoids is presented. This picture provides the mathematical background for Schwinger's algebra of selective measurements and helps to understand its scope and eventual…
This is a largely expository paper about how groups arise or are of interest in model theory. Included are the following topics: classifying groups definable in specific structures or theories and the relation to algebraic groups, groups…
This article contains a basic introduction to the local study of finite groups, including a brief perspective on the theory of fusion systems and $p$-local finite groups. -- Este art\'iculo contiene una introducci\'on b\'asica al estudio…
The algebraic part of approach to groupoids started by S. Zakrzewski is presented.
We give a short introduction to category theory aimed at philosophers. We emphasize methodological issues and philosophical ramifications.
We define a Schur-Clifford subgroup of Turull's Brauer-Clifford group, similar to the Schur subgroup of the Brauer group. The Schur-Clifford subgroup contains exactly the equivalence classes coming from the intended application to Clifford…