Combinatorics Of Equivariant Cohomology

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Combinatorics of Equivariant Cohomology

Author : Elizabeth Drellich
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (95 download)

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Book Synopsis Combinatorics of Equivariant Cohomology by : Elizabeth Drellich

Download or read book Combinatorics of Equivariant Cohomology written by Elizabeth Drellich and published by . This book was released on 2015 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The field of Schubert Calculus deals with computations in the cohomology rings of certain algebraic varieties, including flag varieties and Schubert varieties. In the equivariant setting, GKM theory turns multiplication in the cohomology ring of certain varieties into a combinatorial computation. This dissertation uses combinatorial tools, including Billey's formula, to do Schubert calculus computations in several varieties. First we address do computations in the equivariant cohomology of full and partial flag varieties, the classical spaces in Schubert calculus. We then do computations in the equivariant cohomology of a family of non-classical spaces: regular nilpotent Hessenberg varieties. The final chapter gives a complete presentation for the cohomology ring of the Peterson variety, a type of regular nilpotent Hessenberg variety.

Equivariant Cohomology in Algebraic Geometry

Author : David Anderson
Publisher : Cambridge University Press
ISBN 13 : 1009349961
Total Pages : 464 pages
Book Rating : 4.0/5 (93 download)

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Book Synopsis Equivariant Cohomology in Algebraic Geometry by : David Anderson

Download or read book Equivariant Cohomology in Algebraic Geometry written by David Anderson and published by Cambridge University Press. This book was released on 2023-10-26 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended for first- or second-year graduate students in mathematics, as well as researchers working in algebraic geometry or combinatorics, this text introduces techniques that are essential in several areas of modern mathematics. With numerous exercises and examples, it covers the core notions and applications of equivariant cohomology.

Equivariant Cohomology in Algebraic Geometry

Author : David E. Anderson
Publisher :
ISBN 13 : 9781009349970
Total Pages : 0 pages
Book Rating : 4.3/5 (499 download)

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Book Synopsis Equivariant Cohomology in Algebraic Geometry by : David E. Anderson

Download or read book Equivariant Cohomology in Algebraic Geometry written by David E. Anderson and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Equivariant cohomology has become an indispensable tool in algebraic geometry and in related areas including representation theory, combinatorial and enumerative geometry, and algebraic combinatorics. This text introduces the main ideas of the subject for first- or second-year graduate students in mathematics, as well as researchers working in algebraic geometry or combinatorics. The first six chapters cover the basics: definitions via finite-dimensional approximation spaces, computations in projective space, and the localization theorem. The rest of the text focuses on examples - toric varieties, Grassmannians, and homogeneous spaces - along with applications to Schubert calculus and degeneracy loci. Prerequisites are kept to a minimum, so that one-semester graduate-level courses in algebraic geometry and topology should be sufficient preparation. Featuring numerous exercises, examples, and material that has not previously appeared in textbook form, this book will be a must-have reference and resource for both students and researchers for years to come.

Equivariant Cohomology of Configuration Spaces Mod 2

Author : Pavle V. M. Blagojević
Publisher : Springer Nature
ISBN 13 : 3030841383
Total Pages : 217 pages
Book Rating : 4.0/5 (38 download)

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Book Synopsis Equivariant Cohomology of Configuration Spaces Mod 2 by : Pavle V. M. Blagojević

Download or read book Equivariant Cohomology of Configuration Spaces Mod 2 written by Pavle V. M. Blagojević and published by Springer Nature. This book was released on 2022-01-01 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a brief treatment of the equivariant cohomology of the classical configuration space F(R^d,n) from its beginnings to recent developments. This subject has been studied intensively, starting with the classical papers of Artin (1925/1947) on the theory of braids, and progressing through the work of Fox and Neuwirth (1962), Fadell and Neuwirth (1962), and Arnol'd (1969). The focus of this book is on the mod 2 equivariant cohomology algebras of F(R^d,n), whose additive structure was described by Cohen (1976) and whose algebra structure was studied in an influential paper by Hung (1990). A detailed new proof of Hung's main theorem is given, however it is shown that some of the arguments given by him on the way to his result are incorrect, as are some of the intermediate results in his paper. This invalidates a paper by three of the authors, Blagojević, Lück and Ziegler (2016), who used a claimed intermediate result in order to derive lower bounds for the existence of k-regular and l-skew embeddings. Using the new proof of Hung's main theorem, new lower bounds for the existence of highly regular embeddings are obtained: Some of them agree with the previously claimed bounds, some are weaker. Assuming only a standard graduate background in algebraic topology, this book carefully guides the reader on the way into the subject. It is aimed at graduate students and researchers interested in the development of algebraic topology in its applications in geometry.

Equivariant Cohomology Theories

Author : Glen E. Bredon
Publisher : Springer
ISBN 13 : 3540349731
Total Pages : 72 pages
Book Rating : 4.5/5 (43 download)

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Book Synopsis Equivariant Cohomology Theories by : Glen E. Bredon

Download or read book Equivariant Cohomology Theories written by Glen E. Bredon and published by Springer. This book was released on 2006-11-14 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: a

Geometric Combinatorics

Author : Ezra Miller
Publisher : American Mathematical Soc.
ISBN 13 : 9780821886953
Total Pages : 710 pages
Book Rating : 4.8/5 (869 download)

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Book Synopsis Geometric Combinatorics by : Ezra Miller

Download or read book Geometric Combinatorics written by Ezra Miller and published by American Mathematical Soc.. This book was released on with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geometric combinatorics describes a wide area of mathematics that is primarily the study of geometric objects and their combinatorial structure. This text is a compilation of expository articles at the interface between combinatorics and geometry.

Supersymmetry and Equivariant de Rham Theory

Author : Victor W Guillemin
Publisher : Springer Science & Business Media
ISBN 13 : 3662039923
Total Pages : 243 pages
Book Rating : 4.6/5 (62 download)

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Book Synopsis Supersymmetry and Equivariant de Rham Theory by : Victor W Guillemin

Download or read book Supersymmetry and Equivariant de Rham Theory written by Victor W Guillemin and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 243 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the equivariant cohomology theory of differentiable manifolds. Although this subject has gained great popularity since the early 1980's, it has not before been the subject of a monograph. It covers almost all important aspects of the subject The authors are key authorities in this field.

Introductory Lectures on Equivariant Cohomology

Author : Loring W. Tu
Publisher : Princeton University Press
ISBN 13 : 0691191751
Total Pages : 337 pages
Book Rating : 4.6/5 (911 download)

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Book Synopsis Introductory Lectures on Equivariant Cohomology by : Loring W. Tu

Download or read book Introductory Lectures on Equivariant Cohomology written by Loring W. Tu and published by Princeton University Press. This book was released on 2020-03-03 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a clear introductory account of equivariant cohomology, a central topic in algebraic topology. Equivariant cohomology is concerned with the algebraic topology of spaces with a group action, or in other words, with symmetries of spaces. First defined in the 1950s, it has been introduced into K-theory and algebraic geometry, but it is in algebraic topology that the concepts are the most transparent and the proofs are the simplest. One of the most useful applications of equivariant cohomology is the equivariant localization theorem of Atiyah-Bott and Berline-Vergne, which converts the integral of an equivariant differential form into a finite sum over the fixed point set of the group action, providing a powerful tool for computing integrals over a manifold. Because integrals and symmetries are ubiquitous, equivariant cohomology has found applications in diverse areas of mathematics and physics. Assuming readers have taken one semester of manifold theory and a year of algebraic topology, Loring Tu begins with the topological construction of equivariant cohomology, then develops the theory for smooth manifolds with the aid of differential forms. To keep the exposition simple, the equivariant localization theorem is proven only for a circle action. An appendix gives a proof of the equivariant de Rham theorem, demonstrating that equivariant cohomology can be computed using equivariant differential forms. Examples and calculations illustrate new concepts. Exercises include hints or solutions, making this book suitable for self-study.

Equivariant Algebraic Topology Applied to Some Problems in Topological Combinatorics

Author : Jerson Manuel Borja Soto
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (18 download)

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Book Synopsis Equivariant Algebraic Topology Applied to Some Problems in Topological Combinatorics by : Jerson Manuel Borja Soto

Download or read book Equivariant Algebraic Topology Applied to Some Problems in Topological Combinatorics written by Jerson Manuel Borja Soto and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we present several results on geometric combinatorics whose solution can be achieved by means of results and tools from algebraic topology. The combinatorial problems are related to known problems as the topological Borsuk problem, equilateral sets in metric spaces, Tverberg type problems, evasiveness of graph properties, etc. Among the results and tools used in the solutions of these problems we find theorems of Borsuk-Ulam and Dold, theorems of Smith and Oliver, group cohomology, cohomology theories, numerical and cohomological index theories.

Equivariant Homotopy and Cohomology Theory

Author : J. Peter May
Publisher : American Mathematical Soc.
ISBN 13 : 9780821803196
Total Pages : 106 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Equivariant Homotopy and Cohomology Theory by : J. Peter May

Download or read book Equivariant Homotopy and Cohomology Theory written by J. Peter May and published by American Mathematical Soc.. This book was released on 1996 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume introduces equivariant homotopy, homology, and cohomology theory, along with various related topics in modern algebraic topology. It explains the main ideas behind some of the most striking recent advances in the subject. The works begins with a development of the equivariant algebraic topology of spaces culminating in a discussion of the Sullivan conjecture that emphasizes its relationship with classical Smith theory. The book then introduces equivariant stable homotopy theory, the equivariant stable homotopy category, and the most important examples of equivariant cohomology theories. The basic machinery that is needed to make serious use of equivariant stable homotopy theory is presented next, along with discussions of the Segal conjecture and generalized Tate cohomology. Finally, the book gives an introduction to "brave new algebra", the study of point-set level algebraic structures on spectra and its equivariant applications. Emphasis is placed on equivariant complex cobordism, and related results on that topic are presented in detail.

Schubert Calculus and Its Applications in Combinatorics and Representation Theory

Author : Jianxun Hu
Publisher : Springer Nature
ISBN 13 : 9811574510
Total Pages : 367 pages
Book Rating : 4.8/5 (115 download)

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Book Synopsis Schubert Calculus and Its Applications in Combinatorics and Representation Theory by : Jianxun Hu

Download or read book Schubert Calculus and Its Applications in Combinatorics and Representation Theory written by Jianxun Hu and published by Springer Nature. This book was released on 2020-10-24 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers research papers and surveys on the latest advances in Schubert Calculus, presented at the International Festival in Schubert Calculus, held in Guangzhou, China on November 6–10, 2017. With roots in enumerative geometry and Hilbert's 15th problem, modern Schubert Calculus studies classical and quantum intersection rings on spaces with symmetries, such as flag manifolds. The presence of symmetries leads to particularly rich structures, and it connects Schubert Calculus to many branches of mathematics, including algebraic geometry, combinatorics, representation theory, and theoretical physics. For instance, the study of the quantum cohomology ring of a Grassmann manifold combines all these areas in an organic way. The book is useful for researchers and graduate students interested in Schubert Calculus, and more generally in the study of flag manifolds in relation to algebraic geometry, combinatorics, representation theory and mathematical physics.

Toric Topology

Author : Megumi Harada
Publisher : American Mathematical Soc.
ISBN 13 : 0821844865
Total Pages : 424 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Toric Topology by : Megumi Harada

Download or read book Toric Topology written by Megumi Harada and published by American Mathematical Soc.. This book was released on 2008 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Toric topology is the study of algebraic, differential, symplectic-geometric, combinatorial, and homotopy-theoretic aspects of a particular class of torus actions whose quotients are highly structured. The combinatorial properties of this quotient and the equivariant topology of the original manifold interact in a rich variety of ways, thus illuminating subtle aspects of both the combinatorics and the equivariant topology. Many of the motivations and guiding principles of the fieldare provided by (though not limited to) the theory of toric varieties in algebraic geometry as well as that of symplectic toric manifolds in symplectic geometry.This volume is the proceedings of the International Conference on Toric Topology held in Osaka in May-June 2006. It contains about 25 research and survey articles written by conference speakers, covering many different aspects of, and approaches to, torus actions, such as those mentioned above. Some of the manuscripts are survey articles, intended to give a broad overview of an aspect of the subject; all manuscripts consciously aim to be accessible to a broad reading audience of students andresearchers interested in the interaction of the subjects involved. We hope that this volume serves as an enticing invitation to this emerging field.

Equivariant Quantum Cohomology of Homogeneous Spaces

Author : Constantin Leonardo Mihalcea
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Equivariant Quantum Cohomology of Homogeneous Spaces by : Constantin Leonardo Mihalcea

Download or read book Equivariant Quantum Cohomology of Homogeneous Spaces written by Constantin Leonardo Mihalcea and published by . This book was released on 2005 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Combinatorial Homotopy and 4-Dimensional Complexes

Author : Hans-Joachim Baues
Publisher : Walter de Gruyter
ISBN 13 : 3110854481
Total Pages : 409 pages
Book Rating : 4.1/5 (18 download)

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Book Synopsis Combinatorial Homotopy and 4-Dimensional Complexes by : Hans-Joachim Baues

Download or read book Combinatorial Homotopy and 4-Dimensional Complexes written by Hans-Joachim Baues and published by Walter de Gruyter. This book was released on 2011-05-12 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the series is to present new and important developments in pure and applied mathematics. Well established in the community over two decades, it offers a large library of mathematics including several important classics. The volumes supply thorough and detailed expositions of the methods and ideas essential to the topics in question. In addition, they convey their relationships to other parts of mathematics. The series is addressed to advanced readers wishing to thoroughly study the topic. Editorial Board Lev Birbrair, Universidade Federal do Ceará, Fortaleza, Brasil Walter D. Neumann, Columbia University, New York, USA Markus J. Pflaum, University of Colorado, Boulder, USA Dierk Schleicher, Jacobs University, Bremen, Germany Katrin Wendland, University of Freiburg, Germany Honorary Editor Victor P. Maslov, Russian Academy of Sciences, Moscow, Russia Titles in planning include Yuri A. Bahturin, Identical Relations in Lie Algebras (2019) Yakov G. Berkovich and Z. Janko, Groups of Prime Power Order, Volume 6 (2019) Yakov G. Berkovich, Lev G. Kazarin, and Emmanuel M. Zhmud', Characters of Finite Groups, Volume 2 (2019) Jorge Herbert Soares de Lira, Variational Problems for Hypersurfaces in Riemannian Manifolds (2019) Volker Mayer, Mariusz Urbański, and Anna Zdunik, Random and Conformal Dynamical Systems (2021) Ioannis Diamantis, Boštjan Gabrovšek, Sofia Lambropoulou, and Maciej Mroczkowski, Knot Theory of Lens Spaces (2021)

Multicurves and Equivariant Cohomology

Author : Neil P. Strickland
Publisher : American Mathematical Soc.
ISBN 13 : 0821849018
Total Pages : 130 pages
Book Rating : 4.8/5 (218 download)

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Book Synopsis Multicurves and Equivariant Cohomology by : Neil P. Strickland

Download or read book Multicurves and Equivariant Cohomology written by Neil P. Strickland and published by American Mathematical Soc.. This book was released on 2011 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Let $A$ be a finite abelian group. The author sets up an algebraic framework for studying $A$-equivariant complex-orientable cohomology theories in terms of a suitable kind of equivariant formal group. He computes the equivariant cohomology of many spaces in these terms, including projective bundles (and associated Gysin maps), Thom spaces, and infinite Grassmannians.

Equivariant Ordinary Homology and Cohomology

Author : Steven R. Costenoble
Publisher : Springer
ISBN 13 : 3319504487
Total Pages : 308 pages
Book Rating : 4.3/5 (195 download)

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Book Synopsis Equivariant Ordinary Homology and Cohomology by : Steven R. Costenoble

Download or read book Equivariant Ordinary Homology and Cohomology written by Steven R. Costenoble and published by Springer. This book was released on 2017-01-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the literature, this book takes the reader to the frontiers of equivariant topology, the study of objects with specified symmetries. The discussion is motivated by reference to a list of instructive “toy” examples and calculations in what is a relatively unexplored field. The authors also provide a reading path for the first-time reader less interested in working through sophisticated machinery but still desiring a rigorous understanding of the main concepts. The subject’s classical counterparts, ordinary homology and cohomology, dating back to the work of Henri Poincaré in topology, are calculational and theoretical tools which are important in many parts of mathematics and theoretical physics, particularly in the study of manifolds. Similarly powerful tools have been lacking, however, in the context of equivariant topology. Aimed at advanced graduate students and researchers in algebraic topology and related fields, the book assumes knowledge of basic algebraic topology and group actions.

Hamiltonian Group Actions and Equivariant Cohomology

Author : Shubham Dwivedi
Publisher :
ISBN 13 : 9783030272289
Total Pages : 132 pages
Book Rating : 4.2/5 (722 download)

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Book Synopsis Hamiltonian Group Actions and Equivariant Cohomology by : Shubham Dwivedi

Download or read book Hamiltonian Group Actions and Equivariant Cohomology written by Shubham Dwivedi and published by . This book was released on 2019 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph could be used for a graduate course on symplectic geometry as well as for independent study. The monograph starts with an introduction of symplectic vector spaces, followed by symplectic manifolds and then Hamiltonian group actions and the Darboux theorem. After discussing moment maps and orbits of the coadjoint action, symplectic quotients are studied. The convexity theorem and toric manifolds come next and we give a comprehensive treatment of Equivariant cohomology. The monograph also contains detailed treatment of the Duistermaat-Heckman Theorem, geometric quantization, and flat connections on 2-manifolds. Finally, there is an appendix which provides background material on Lie groups. A course on differential topology is an essential prerequisite for this course. Some of the later material will be more accessible to readers who have had a basic course on algebraic topology. For some of the later chapters, it would be helpful to have some background on representation theory and complex geometry.