Here are some links filtered out from my bookmarks. Only those open to the public domain are given. For any suggestions or comments regarding this page, please contact me via Twitter.

### Papers

- ArXiv for math papers. Use ArXiv mailing lists or our Twitter feeds for various ArXiv categories.
- Numdam for papers from French journals. EGA, SGA, Publ. IHES., etc..
- GDZ, the Göttinger Digitalisierungszentrum for old German papers, Inv. Math., etc.

### Subject interests

- Number Theory Web for number theorists.
- EAGER-GEN, A European mailing list for Algebraic Geometry.
- The n-Category café and nLab.
- Commutative Algebra.
- Foliations.
- LFMDB, L-functions, modular forms database.
- Probability Web

### Software

We emphasize primarily open-source and free software here considering the financial constraints of unaffiliated or obscurely placed people.

- LaTeX is very useful for document preparation and mathematics typesetting.
- Python is a general purpose programming language which is easy to read and comparatively pleasant to code in. See also SymPy, nymPy for numerical programming, PyCrypto for cryptography, NetworkX for network simulation and finally the beautiful IPython project and notebooks.
- Sage aka SageMath is a free open-source package aiming to be an alternative to Magma, Maple, Mathematica and Matlab.
- PARI/GP is a computer algebra system mainly focused on number theory.
- Elliptic curve database of Cremona.
- Regina for 3-manifolds.
- Macaulay2 for algebraic geometry.
- GAP for Computational Discrete Algebra, Groups, representations, etc.
- R project for statistics and data science.

### Whimsy

- Mathematical jokes
- Mathematician's Apology of G. H. Hardy.
- Apocrypha

### General

- History of Mathematics, the MacTutor site.
- Mathematical Genealogy.
- Outofprintmath : Out of print mathematics books.
- Proof wiki.
- Mathematics at Stackexchange is a place for math queries. Mathoverflow is somewhat similar.

### Institutions, News and Magazines

- Clay Mathematical Institute
- Fondation SM Paris
- American Mathematical Society.
- Notices of the AMS.
- Quanta

# Blogs

#### Miscellaneous Categories

#### Analysis

#### Probability

#### Dynamics

#### Topology/Geometry

- Low dimensional topology
- 392c Geometric Group Theory
- Alex Sisto
- Floer Homology
- 2011 Spring Bernstein Seminar
- Danny Calegari

#### Algebraic Geometry

- Stacks Project of Aise Johan de Jong.
- Burt Totaro.
- David Mumford

###### Noncommutative Geometry

#### Number Theory

- Harald Helfgott
- Matt Baker
- Mixedmath of David Lowry-Duda
- Terence Tao again
- A mind for madness, with a strong dose of algebraic geometry, philosophy and miscellany
- Lemma Meringue.
- Mark Lewko
- Galois Representations