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Seifert–van Kampen theorem
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#	Item
11	Crossed complexes and higher homotopy groupoids as non commutative tools for higher dimensional local-to-global problems∗ Ronald Brown† March 1, 2009 Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2009-03-01 12:04:52 Homotopy theory Algebraic topology Category theory Higher category theory Algebraic structures Double groupoid Crossed module Groupoid Seifert–van Kampen theorem Abstract algebra Topology Mathematics
12	C AHIERS DE TOPOLOGIE ET GÉOMÉTRIE DIFFÉRENTIELLE CATÉGORIQUES RONALD B ROWN C HRISTOPHER B. S PENCER Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2008-05-25 09:00:41 Mathematics Category theory Higher category theory Algebraic topology Algebraic structures Double groupoid Groupoid Seifert–van Kampen theorem Crossed module Abstract algebra Homotopy theory Topology
13	Colimit Theorems for Relative Homotopy Groups∗ Ronald Brown† School of Mathematics, University of Wales, Bangor, Dean St., Bangor, Gwynedd LL57 1UT, Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2012-12-14 09:39:55 Homotopy theory Algebraic topology Hurewicz theorem Homotopy group Crossed module Fundamental group CW complex Seifert–van Kampen theorem Homotopy Topology Abstract algebra Mathematics
14	HOMOTOPICAL EXCISION, AND HUREWICZ THEOREMS, FOR n-CUBES OF SPACES ∗ Ronald Brown and Jean-Louis Loday Introduction The fact that the relative homotopy groups do not satisfy excision makes the computation of absolute h Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2006-12-24 10:28:00 Algebraic topology Homology theory Hurewicz theorem Homotopy group Category theory Crossed module Fundamental group Functor Seifert–van Kampen theorem Abstract algebra Topology Homotopy theory
15	Advances in Mathematics 170, 71–[removed]doi:[removed]aima[removed]Multiple Categories: The Equivalence of a Globular and a Cubical Approach Fahd Ali Al-Agl1 Add to Reading List Source URL: pages.bangor.ac.uk Language: English - Date: 2004-10-19 08:39:54 Category theory Homotopy theory Algebraic topology Groupoid Seifert–van Kampen theorem Crossed module Double groupoid Category Simplicial set Abstract algebra Topology Mathematics
16	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
17	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
18	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
19	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
20	************************************** 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

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