Homotopy theory

Results: 956



#Item
671Differential topology / Geometric topology / Topological spaces / Homotopy group / CW complex / Homotopy / Diffeomorphism / Surgery theory / Euler characteristic / Topology / Homotopy theory / Algebraic topology

Diffeomorphism Groups of Reducible 3-Manifolds Allen Hatcher In a 1979 announcement by C´esar de S´a and Rourke [CR] there is a sketch of an intuitively appealing approach to measuring the difference between the homoto

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Source URL: www.math.cornell.edu

Language: English - Date: 2008-08-12 20:04:07
672Geometric topology / Homotopy theory / Mapping class group / Diffeomorphism / Orientability / Manifold / Thom space / Homotopy group / Homotopy / Topology / Differential topology / Algebraic topology

A Short Exposition of the Madsen-Weiss Theorem Allen Hatcher The theorem of Madsen and Weiss [MW] identifies the homology of mapping class groups of surfaces, in a stable dimension range, with the homology of a certain i

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Source URL: www.math.cornell.edu

Language: English - Date: 2014-02-12 10:55:42
673Geometric topology / Algebraic topology / Homotopy theory / Fundamental group / Entailment / Mapping class group / Curry–Howard correspondence / Karen Vogtmann / Train track map / Topology / Mathematics / Abstract algebra

RATIONAL HOMOLOGY OF AUT(Fn ) Allen Hatcher * and Karen Vogtmann* ABSTRACT. We compute the rational homology in dimensions less than seven of the group of automorphisms of a finitely generated free group of arbitrary ran

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Source URL: www.math.cornell.edu

Language: English - Date: 1998-12-23 10:36:42
674Algebraic topology / Modular forms / Homotopy theory / Riemann surfaces / Group theory / Covering space / Modular curve / Fuchsian group / Valuation / Abstract algebra / Mathematics / Topology

Riemann Surfaces This course on Riemann surfaces assumes that the reader is familiar with sheaf theory. 1

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Source URL: www.math.rug.nl

Language: English - Date: 2004-04-19 07:18:04
675Differential topology / Algebraic topology / Geometric topology / Diffeomorphism / Diff / Cobordism / H-cobordism / Mapping class group / Characteristic class / Topology / Surgery theory / Abstract algebra

A 50 -Year View of Diffeomorphism Groups Allen Hatcher Question: For a smooth compact manifold M can one determine the homotopy type of its diffeomorphism group Diff(M) ? Why this is interesting:

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Source URL: www.math.cornell.edu

Language: English - Date: 2012-05-07 08:19:51
676Geometric topology / Maps of manifolds / Differential topology / Algebraic topology / Homotopy / Diffeomorphism / Connected sum / Isotopy / CW complex / Topology / Abstract algebra / Homotopy theory

On the Diffeomorphism Group of S1 × S2 Allen Hatcher This is a revision, written in December 2003, of a paper of the same title that appeared in the Proceedings of the AMS[removed]), [removed].

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Source URL: www.math.cornell.edu

Language: English - Date: 2009-06-01 09:18:44
677Algebraic topology / Geometric topology / Geometric group theory / Homeomorphisms / Mapping class group / Homotopy group / Diffeomorphism / Homotopy / Torus / Topology / Homotopy theory / Abstract algebra

1295 ISSN[removed]on line[removed]printed) Geometry & Topology Volume[removed]–1336

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Source URL: www.math.cornell.edu

Language: English - Date: 2007-09-15 08:10:11
678Algebraic topology / Geometric group theory / Homology theory / Homotopy theory / Simplex / Karen Vogtmann / Out / CW complex / Homology / Topology / Abstract algebra / Mathematics

1 ISSN numbers are printed here Algebraic & Geometric Topology

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Source URL: www.math.cornell.edu

Language: English - Date: 2006-03-22 09:21:54
679Maps of manifolds / General topology / Link / Homotopy / Covering space / Torus / Connected space / Configuration space / Knot theory / Topology / Algebraic topology / Manifolds

CONFIGURATION SPACES OF RINGS AND WICKETS TARA E. BRENDLE AND ALLEN HATCHER Abstract. The main result in this paper is that the space of all smooth links in R3 isotopic to the trivial link of n components has the same ho

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Source URL: www.math.cornell.edu

Language: English - Date: 2012-12-23 20:06:08
680Algebra / Spectral sequences / Homological algebra / Homotopy theory / Group theory / Serre spectral sequence / Sheaf / Bockstein spectral sequence / Exact sequence / Abstract algebra / Topology / Algebraic topology

A PRIMER ON SPECTRAL SEQUENCES Contents 1. Definitions 2. Exact Couples 3. Filtered Complexes

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Source URL: www.math.uchicago.edu

Language: English - Date: 2009-06-01 11:51:40
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