**Notes on Categories and Groupoids**

by P. J. Higgins

**Publisher**: Van Nostrand Reinhold 1971**ISBN/ASIN**: 0442034067**ISBN-13**: 9780442034061**Number of pages**: 195

**Description**:

This book presents a self-contained account of the elementary theory of groupoids and some of its uses in group theory and topology. Category theory appears as a secondary topic whenever it is relevant to the main issue, and its treatment is by no means systematic.

Download or read it online for free here:

**Download link**

(14MB, PDF)

## Similar books

**Elements of Group Theory**

by

**F. J. Yndurain**-

**arXiv**

The following notes are the basis for a graduate course. They are oriented towards the application of group theory to particle physics, although some of it can be used for general quantum mechanics. They have no pretense of mathematical rigor.

(

**16830**views)

**An Elementary Introduction to Groups and Representations**

by

**Brian C. Hall**-

**arXiv**

An elementary introduction to Lie groups, Lie algebras, and their representations. Topics include definitions and examples of Lie groups and Lie algebras, the basics of representations theory, the Baker-Campbell-Hausdorff formula, and more.

(

**19476**views)

**Smarandache Semigroups**

by

**W. B. Vasantha Kandasamy**-

**American Research Press**

The Smarandache semigroups exhibit properties of both a group and a semigroup simultaneously. This book assumes the reader to have a good background on group theory; we give some recollection about groups and some of its properties for reference.

(

**10831**views)

**Groups and Semigroups: Connections and Contrasts**

by

**John Meakin**-

**University of Nebraska-Lincoln**

In the present paper, I will discuss some of these connections between group theory and semigroup theory, and I will also discuss some rather surprising contrasts between the theories. I will focus primarily on the theory of inverse semigroups.

(

**9805**views)