This is a list of resources, references to literatures in particular, for the various subjects I teach. Some of the recommendations are taken from wikipedia, which is also the first place to look up for information about the courses content. Note also, that all courses taught at Leicester provide self-contained material. Questions, comments or additions can be addressed to email(at)christiankissig.de .

Category Theory

• Adamek, Herrlich, Strecker, Abstract and Concrete Categories: The Joy of Cats [Book,Website]
• MacLane, Categories for the Working Mathematician [Book]

Databases

• Connolly, Begg, Database Systems [Book]

Distributed Programming

• Tanenbaum, v Steen,  Distributed Systems [Book, Website]

Quantum Field Theories

• Turaev, Quantum Invariants of Knots and 3-Manifolds [Book]

Topology

• Hatcher, Algebraic Topology [Book, Website]
• Viro, Ivanov, Kharlamov, Netsvetaev, Elementary Topology: Textbook in Problems [Book, Website]