The nLab is a wiki for researchlevel notes, expositions and collaborative work, including original research, in mathematics, physics, and philosophy, with a focus on methods from type theory, category theory, and homotopy theory. The nLab espouses the "npoint of view"^{[1]} (a deliberate pun on Wikipedia's "neutral point of view") that type theory, homotopy theory, category theory, and higher category theory provide a useful unifying viewpoint for mathematics, physics and philosophy. The n in npoint of view could refer to either ncategories as found in higher category theory, ngroupoids as found in both homotopy theory and higher category theory, or ntypes as found in homotopy type theory.
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Lab Math Part 1

Research Spotlight: Solving problems with the Grouplens Lab  Computer Science and Engineering

Lab Reports: The Independent Variable, Dependent Variable, Control Variables, and Research Question
Transcription
Overview
The nLab was originally conceived to provide a repository for ideas (and even new research) generated in the comments on posts at the nCategory Café, a group blog run (at the time) by John C. Baez, David Corfield and Urs Schreiber. Eventually the nLab developed into an independent project, which has since grown to include whole research projects and encyclopedic material.^{[2]}
Associated to the nLab is the nForum, an online discussion forum for announcement and discussion of nLab edits (the analog of Wikipedia's "talk" pages) as well as for general discussion of the topics covered in the nLab. The preferred way of contacting the nLab steering committee is to post on the nForum.^{[3]} An experimental subproject of the nLab is the Publications of the nLab, intended as a journal for refereed research articles that are published online and crosshyperlinked with the main wiki: this subproject appears to be inactive as of 2014.^{[4]}
The nLab was set up on November 28, 2008 by Urs Schreiber using the Instiki software provided and maintained by Jacques Distler. Since May 2015 it runs on a server at Carnegie Mellon University that is funded in the context of Steve Awodey's Homotopy Type Theory MURI grant.^{[5]} The system administrator is Richard Williamson. The domain ncatlab.org is owned by Urs Schreiber.
The nLab is listed on MathOverflow as a standard online mathematics reference to check before asking questions.^{[6]} Many questions and answers link to the nLab for background material.^{[7]} It is one of two wikis mentioned by the mathematical physicist John C. Baez in his review of math blogs for the American Mathematical Society.^{[8]}
There is an informal steering committee, which "doesn't run the nLab",^{[9]} but exists in order to resolve issues that would cause the whole project to run into trouble.
The content of the wiki is not placed under a specific copyright license.^{[10]}
See also
References
 ^ nPOV in nLab
 ^ Urs Schreiber, What is... the nLab?
 ^ Steering committee in nLab meta
 ^ "Publications". ncatlab.org. Retrieved 20231027.
 ^ Awodey, Steve (29 April 2014). "HoTT awarded a MURI". Homotopy Type Theory. Retrieved 8 August 2020.
 ^ MathOverflow, 1.0 'How to ask' page. Archived on 20130604.
 ^ MathOverflow, Results for a search for 'nlab'. As of 20181211 there are over 800 results.
 ^ John C. Baez, "Math Blogs", Notices of the American Mathematical Society, March 2010
 ^ Steering committee in nLab meta
 ^ "nLab". ncatlab.org. Retrieved 20231028.