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Double groupoid
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11	COMPUTING HOMOTOPY TYPES USING CROSSED N -CUBES OF GROUPS∗ Ronald Brown University of Wales, Bangor Gwynedd LL57 1UT, U.K. Dedicated to the memory of Frank Adams Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2006-08-12 17:58:10 Mathematics Algebraic topology Category theory Higher category theory Algebraic structures Crossed module Homotopy group Seifert–van Kampen theorem Double groupoid Abstract algebra Topology Homotopy theory
12	Intuitions for cubical methods in nonabelian algebraic topology Ronnie Brown IHP, Paris, June 5, 2014 CONSTRUCTIVE MATHEMATICS AND MODELS OF TYPE Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2014-06-08 07:12:18 Homotopy theory Category theory Algebraic topology Higher category theory Algebraic structures Seifert–van Kampen theorem Double groupoid Groupoid Crossed module Abstract algebra Topology Mathematics
13	arXiv:math.DG[removed]v3 2 Feb[removed]Connes’ tangent groupoid and strict quantization Jos´e F. Cari˜ nena a, Jes´ Add to Reading List Source URL: dftuz.unizar.es Language: English - Date: 2002-02-22 04:24:29 Differential geometry Differential topology Homotopy theory Riemannian geometry Category theory Groupoid Riemannian manifold Exponential map Double groupoid Mathematical analysis Mathematics Topology
14	Groupoids and crossed objects in algebraic topology Ronald Brown∗ School of Computer Science Bangor University United Kingdom October 23, 2011 Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2011-10-23 12:37:46 Homotopy theory Category theory Higher category theory Algebraic topology Algebraic structures Groupoid Double groupoid Seifert–van Kampen theorem Group action Abstract algebra Mathematics Algebra
15	FROM GROUPS TO GROUPOIDS: A BRIEF SURVEY ∗ RONALD BROWN Bull. London Math. Soc[removed][removed] Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2012-04-02 11:09:15 Homotopy theory Category theory Algebraic topology Group theory Higher category theory Groupoid Seifert–van Kampen theorem Double groupoid Group action Abstract algebra Mathematics Algebra
16	************************************** BANACH CENTER PUBLICATIONS, VOLUME INSTITUTE OF MATHEMATICS POLISH ACADEMY OF SCIENCES WARSZAWA 200* Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2006-11-26 09:46:46 Homotopy theory Algebraic topology Category theory Differential geometry Higher category theory Groupoid Double groupoid Seifert–van Kampen theorem Lie groupoid Abstract algebra Mathematics Topology
17	The Seifert-van Kampen Theorem for the fundamental groupoid of a space with a set of base points This note is an extract for the convenience of readers of a section of the book [BHS11], with some additional comments. Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2014-04-10 13:42:56 Algebra Category theory Higher category theory Algebraic structures Algebraic topology Double groupoid Seifert–van Kampen theorem Groupoid Pushout Abstract algebra Mathematics Homotopy theory
18	Groups, groupoids and higher groupoids in algebraic topology An area of mathematics in which nonabelian structures have proved important is algebraic topology, where the fundamental group π1 (X, a) of a space X at a bas Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2010-12-20 11:50:11 Homotopy theory Category theory Higher category theory Algebraic topology Algebraic structures Double groupoid Seifert–van Kampen theorem Higher-dimensional algebra Homotopy group Abstract algebra Topology Mathematics
19	Homotopy theory, and change of base for groupoids and multiple groupoids∗† Ronald Brown March 6, 2007 Abstract Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2007-03-06 17:03:14 Homotopy theory Category theory Higher category theory Algebraic topology Algebraic structures Double groupoid Groupoid Seifert–van Kampen theorem Crossed module Abstract algebra Mathematics Topology
20	ON THE CONNECTION BETWEEN THE SECOND RELATIVE HOMOTOPY GROUPS OF SOME RELATED SPACES Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2008-03-06 07:26:59 Mathematics Groupoid Homotopy group Double groupoid Crossed module Fundamental group Homotopy Group action Path Abstract algebra Homotopy theory Topology

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