nLab
Online Resources

This page lists links to blogs, wikis, and other online resources about mathematics.

For a quick introduction to math blogging, see

• John Baez, What do mathematicians need to know about blogging? AMS notices, March 2010 (pdf)

  blog discussion about this piece: Part I and Part II

See also MO question: most helpful math resources on the web.

Please help with improving this page:

• add links that are missing;

• add information to links on what kind of activity tends to go on at the sites being linked to.

Note: To maintain the quality and relevance of this list, any new links not containing a brief description may be removed.

Mathematics

Online encyclopaedias

• eom.springer.de – free online access to 8000 entries of Springer online Encyclopeadia of Mathematics

• wolframworld

Forums

• Math Overflow has become a universal clearinghouse for questions and answers “of interest to mathematicians”, modeled on stackoverflow.

• n-Forum For discussions about material (both maths and metas) here on the nLab.

Collections

• MathOnline is dedicated to collecting free mathematics resources, like books, lecture notes, videos and more. Using reviews, votes, and a tagging system, all this material is kept organized.

Blogs

• Affine Mess

• Alasdair’s Musings Mainly (but not entirely) mathematics education and computer algebra systems.

• A Mind for Madness “Musings on art, philosophy, mathematics, and physics” (topics like differential geometry, homological algebra, but also belletristics)

• A Portion of the Book (blog of a math undergrad)

• AMS Graduate Student Blog (career advices, education and entertainment “for and by” math grad students)

• Annoying Precision (algebra, representation theory, combinatorics, abstract nonsense, arithmetics)

• Ars Mathematica (analysis, probability…)

• category theory at community.livejournal (in Russian)

• Combinatorics and more: Gil Kalai’s blog

• Climbing Mount Bourbaki (Akhil Mathew: Lie algebras, differential and algebraic geometry…)

• Concrete Nonsense (combinatorics, Lie algebras, representation theory, algebraic geometry)

• Delta Epsilons A group blog focusing on algebra, representation theory, and Olympiad-style problem-solving

• Disquisitiones Mathematicae (dynamical systems, ergodic theory, radnomness in number sequences, Ricci flow)

• Division by Zero (Dave Richeson: “A blog about math, puzzles, teaching, and academic technology”)

• Drexel mathematics (from Drexel Univ. Libraries: mainly books)

• Embûches tissues (computational algebraic geometry, commutative algebra)

• Emmanuel Kowalski’s blog (analysis, esp. summation formulas, probability distributions, stochastic processes…)

• Edinburgh Mathematical Physics Group blog

• Frank Morgan’s Blog (Riemannian and metric geometry, inequalities…)

• F_un mathematics (“field with one element”)

• Geometric Group Theory (structured text with theorems, proofs and exercises in GGT)

• Geometry and the Imagination (Danny Calegari: hyperbolic geometry, geometric group theory…)

• God plays dice (probability, combinatorics, puzzles, financial math)

• Good Math, Bad Math (dedicated to chasing math crackpots)

• Gyre and Gimble (Charles Wells: foundations, categories, computer science)

• Hydrobates (dynamical systems, differential equations, biomedical modelling)

• Learning Curves (mathematics education from the perspective of a retiring college professor; may contain vulgar language and expressions of anger)

• Le Petit Chercheur Illustré (Signal processing and applied math)

• London Number Theory Blog (arithmetics and arithmetic geometry)

• Low Dimensional Topology

• Math-Blog (6 people blog: math books, university math, popular math etc.)

• Mathematical Musings (Interactions of probability, statistical physics, topology, and combinatorics. Matthew Kahle)

• Mathematics and Computation (Andrej Bauer, includes also topology and foundations)

• Mathematics and Physics (Richard Borcherds)

• Mathematics Expressions (Colin Tan: complex geometry)

• Mathematics Under the Microscope (Alexandre Borovik)

• mathlight (just started, by an $n$lab regular)

• Mathlog (in German, variety of topics from Open Access journals to Klein groups and geometry)

• Maxwell’s Demon (Edmund Harriss: vizualizing math and math art, building math sculptures)

• Motivic Stuff (Andreas Holmstrom)

• My research in geometry (Aleks Kleyn)

• Nathaniel Johnston’s Blog (PhD student in quantum information)

• neverendingbooks (Lieven le Bruyn)

• Nikita Markarian’s mathblog (derived algebraic geometry, dg-, $L_{\mathrm{\infty }},A_{\mathrm{\infty }},G_{\mathrm{\infty }}$-algebras, operads, TQFT, BV formalism, Hochschild and cyclic (co)homology…)

• Noncommutative Geometry (Connes, Khalkhali…)

• Noncommutative geometry with point, by a grad student at Kansas

• Nuit Blanche (data/imager/sensory compression, pattern recognition, networking, internet, AI/machine learning, neuroscience)

• qrazydragon (math, books, internet, in Russian)

• Reasonable Deviations (control and dynamical systems, game theory, information, optimization, statistical mechanics, chemical kinetics, technology, puzzles)

• Rigorous Trivialities (mainly algebraic geometry, including well-organized introductory notes algebraic geometry from the beginning)

• Secret Blogging Seminar run by 8 recent Berkeley Ph.D. graduates. “Sort of like a seminar, but with (even) more rude commentary from the audience.”

• Sketches of Topology (colorful pictures, “visualizations of low dimensional topology”)

• SymOmega (root systems, Weyl groups, buildings, algebraic groups…)

• Teaching College Math A blog about math, technology, and teaching.

• The accidental mathematician (Izabella Laba: personal blog of a math professor, various topics, rarely even math)

• The Endeavour (programming, general science, probability and statistics)

• The Everything Seminar (“Geometry, topology, categories, groups, physics”; recently lots about experimental particle physics: LHC and CMS)

• Theoretical atlas (Jeffrey Morton: groupoids, groupoidification, stacks, quantum physics, noncommutative geometry)

• The n-Category Café

  • A group blog on math, physics and philosophy written by (currently) seven people and affiliated with this wiki

• The n-Geometry Café (Lieven Le Bruyn: mainly noncommutative geometry; geometry of $n\times n$-matrix representations, quivers, Azumaya algebras…)

• The Polymath Blog (Tim Gowers “polymath” group projects: number theory, polynomials, algorithms, complexity…)

• The Rising Sea (Daniel Murfet on algebraic geometry, triangulated categories, sheaves…; lots of neat LaTeX notes)

• The Twofold Gaze (a grad student at NYU: genetic algorithms, inequalities, competitions)

• The unapologetic mathematician (John Armstrong)

• Three-Toed Sloth (Cosma Shalizi: books, science, automata, complex networks, stochastic processes, numerics and simulation, arts, literature, politics)

• Tim Gowers’ blog

• Todd and Vishal’s blog

• Victor Porton’s math blog (filters, posets, funcoids and reloids)

• Vivatsgasse 7 (Max Planck Bonn graduate students, now little activity)

• What’s new (Terence Tao)

• Wiskundemeisjes

  • A blog about mathematics for a general audience, written by Jeanine Daems and Ionica Smeets (in Dutch)

• Wiskunde is sexy

  • Another blog about mathematics for a general audience, written by Rudi Penne and Paul Levrie (also in Dutch)

• XOR’s hammer (logics and foundations)

Wikis

• Analysis & PDE conferences

• Deferential Geometry

• DispersiveWiki

• Manifold Atlas Project

• Mathematics Jobs Wiki

• Mathematics Wikia

• Similarity Search Wiki

• The nLab, or $n$-Category Lab, which you are reading right now!

• The Tricki

Probability and Statistics

Blogs

• Hot Hand — Sports Streakiness

• Social Science Statistics Blog

• Statistical Modeling, Causal Inference and Social Science

• The Endeavour

• Williams College Math/Stat blog

Wikis

• Chance News

• Wikitistics - Statistics Wiki

Theoretical Computer Science

Blogs

Please see this page.

Math-related

Blogs

• Mathematics in Australia

• Nonoscience

• Numb3rs

• Out of print math

• Sage: Open Source Mathematical Software

• Quomodocumque

Technical help with math blogs

• Luca Trevisan’s LaTeX to Wordpress converter

• This nifty script fixes the eyestrain caused by poorly designed blog contrasts. 15 seconds to install, works for Firefox only.

• Detexify for finding LaTeX symbols by drawing them.

• LaTeX on Blogger for installing LaTeX on Blogger.

category: meta