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The ''n''Lab is a wiki for research-level notes, expositions and collaborative work, including original research, in mathematics, physics, and philosophy, with a focus on methods from category theory and homotopy theory. The ''n''Lab espouses the "''n''-point of view"〔(''n''POV ) in ''n''Lab〕 (a deliberate pun on Wikipedia's "neutral point of view") that category theory and particularly higher ''n''-category theory provide a useful unifying viewpoint for mathematics, physics and philosophy. The ''n''Lab was originally conceived to provide a repository for ideas (and even new research) generated in the comments on posts at the ''n''-Category Café, a group blog run (at the time) by John Baez, David Corfield and Urs Schreiber. Eventually the ''n''Lab developed into an independent project which has since grown to include whole research projects and encyclopedic material.〔Urs Schreiber, (What is... the nLab? )〕 Associated to the ''n''Lab is the (nForum ), an online discussion forum for announcement and discussion of ''n''Lab edits (the analog of Wikipedia's "talk" pages) as well as for general discussion of the topics covered in the ''n''Lab. The preferred way of contacting the ''n''Lab steering committee is to post on the nForum.〔() in ''n''Lab meta〕 An experimental sub-project of the ''n''Lab is the ''Publications of the ''n''Lab'', intended as a journal for refereed research articles that are published online and cross-hyperlinked with the main wiki. The ''n''Lab 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 (HoTT MURI grant ). The system administrator is (Adeel Khan Yusufzai ). The domain ncatlab.org is owned by Urs Schreiber. The ''n''Lab is listed on MathOverflow as a standard online mathematics reference to check before asking questions.〔(MathOverflow ), 1.0 'How to ask' page. Archived on 2013-06-04.〕 Many questions and answers link to the ''n''Lab for background material.〔(MathOverflow ), Results for a search for 'nlab'. As of 2014-02-28 there are over 500 results.〕 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.〔John C. Baez, "(Math Blogs )", ''Notices of the American Mathematical Society'', March 2010〕 There is an informal steering committee, which "doesn't run the ''n''Lab",〔(Steering committee ) in ''n''Lab meta〕 but exists in order to resolve issues that would cause the whole project to run into trouble. == References == 〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「NLab」の詳細全文を読む スポンサード リンク
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