| Algebraic Number Theory Archive: Number theory/arithmetic geometry. (~200 articles) |
| Banach Space Bulletin Board: Banach spaces/functional analysis. (~400 articles, arXiv overlay) |
| Center for Commutative Algebra: Preprint announcements and links. |
| Conservation Laws Preprint Server: Analysis/simulation of conservative PDEs. (100+ articles) |
| Cryptology ePrint Archive: At the IACR. |
| Groups, Representations, and Cohomology Preprint Archive: Algebraic topology/finite group theory. (100s of articles.) |
| Hopf Topology Archive: Algebraic topology and related areas. (~400 articles) |
| Jordan Theory Preprint Archives: Jordan algebras and related topics (~100 articles). |
| K-theory Preprint Archive: K-theory (generalized cohomology theories). (~400 articles) |
| Linear Algebraic Groups and Related Structures: Including Azumaya Algebras, Algebras with Involutions, Brauer Groups, Quadratic and Hermitean Forms, Witt Rings, Lie and Jordan Algebras, Homogeneous Varieties. DVI, PS, PDF (~80 items). |
| Markov Chain Monte Carlo Preprint Service: A list of all registered papers on MCMC methodology currently submitted for publication. Based at the Statistical Laboratory of the University of Cambridge. |
| Mathematical Physics Archive: Also called mp_arc; at UT Austin. (2000- articles) |
| MGNet Preprints: Multigrid and other methods for PDE simulation. (100+ articles) |
| Optimization Online: A repository of eprints about optimisation and related topics. |
| Probability Abstract Service: Probability Abstract Letters are sent about once every two months. The subscription is free. |
| Shelah's Archive: Papers by Saharon Shelah in logic and related. (100s of articles, arXiv mirrored) |
| Topology Atlas Preprints: Mostly general topology. (400+ articles) |