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The University of York Mathematics Society - Our aim is to enhance the social experience of students, expand academic opportunities in mathematics and forge strong relations for our members to use in future careers and beyond

Introduction to Category Theory by Shaun Isherwood

Shaun Isherwood has written an introduction to category theory and agreed to make it available via the MathSoc website. Category theory is one of the most fundamental and most enlightening areas of modern algebra, providing a general theory explaining many properties of mathematical systems, and pointing our the similarities in structure between many branches of mathematics, and I would highly recommend it to anyone interested in abstract mathematics.

You can read the article here.