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General
An English-Norwegian mathematical dictionary
Set Theory
Further Reading
Zermelo-Frankel set theory is the most popular set of axioms for set theory. Starting with these one can construct the real numbers!
This video on Set Theory and infinity explores cardinality in a fun, if non-rigid, way. Are there unanswerable questions in mathematics?
Spaces and Topology
Further reading
Limits and completions
Linear Transformations
Matrices
Khan Academy has some decent lectures on linear algebra.
Hilbert Space
This page is edited by Karin. It will contain links to supplemental materials for the course and suggestions for furter reading. Note that the material is optional, and that NTNU does not take responsibility for the contents in the links here posted.