Algebraic topology and related areas. (~400 articles)
Multigrid and other methods for PDE simulation. (100+ articles)
K-theory (generalized cohomology theories). (~400 articles)
Also called mp_arc; at UT Austin. (2000- articles)
Analysis/simulation of conservative PDEs. (100+ articles)
Banach spaces/functional analysis. (~400 articles, arXiv overlay)
A repository of eprints about optimisation and related topics.
Mostly general topology. (400+ articles)
Papers by Saharon Shelah in logic and related. (100s of articles, arXiv mirrored)
Including Azumaya Algebras, Algebras with Involutions, Brauer Groups, Quadratic and Hermitean Forms...