On Group-Theoretic Decision Problems and Their Classification. (AM-68), Volume 68

On Group-Theoretic Decision Problems and Their Classification. (AM-68), Volume 68 PDF

Author: Charles F. Miller III

Publisher: Princeton University Press

Published: 2016-03-02

Total Pages: 116

ISBN-13: 1400881781

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Part exposition and part presentation of new results, this monograph deals with that area of mathematics which has both combinatorial group theory and mathematical logic in common. Its main topics are the word problem for groups, the conjugacy problem for groups, and the isomorphism problem for groups. The presentation depends on previous results of J. L. Britton, which, with other factual background, are treated in detail.

Algorithms and Classification in Combinatorial Group Theory

Algorithms and Classification in Combinatorial Group Theory PDF

Author: Gilbert Baumslag

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 235

ISBN-13: 1461397308

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The papers in this volume are the result of a workshop held in January 1989 at the Mathematical Sciences Research Institute. Topics covered include decision problems, finitely presented simple groups, combinatorial geometry and homology, and automatic groups and related topics.

Non-commutative Cryptography and Complexity of Group-theoretic Problems

Non-commutative Cryptography and Complexity of Group-theoretic Problems PDF

Author: Alexei G. Myasnikov

Publisher: American Mathematical Soc.

Published: 2011

Total Pages: 402

ISBN-13: 0821853600

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Examines the relationship between three different areas of mathematics and theoretical computer science: combinatorial group theory, cryptography, and complexity theory. It explores how non-commutative (infinite) groups can be used in public key cryptography. It also shows that there is remarkable feedback from cryptography to combinatorial group theory because some of the problems motivated by cryptography appear to be new to group theory.

Combinatorial Group Theory, Discrete Groups, and Number Theory

Combinatorial Group Theory, Discrete Groups, and Number Theory PDF

Author: Discrete Groups Conference on Combinatorial Group Theory

Publisher: American Mathematical Soc.

Published: 2006

Total Pages: 282

ISBN-13: 0821839853

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Read Write Inc. Fresh Start is a specially adapted literacy programme for all pupils in Years 5, 6 and 7 who are working below National Curriculum level 3. Like Read Write Inc. Phonics for pupils in the early years, the scheme starts by introducing pupils to all the letter sounds through use of the Speed Sounds cards and the green and red flashcards.Pupils progress through these sets of workbooks at their own pace, after they have completed the Introductory module. Modules 1-10 include both fiction and non-fiction texts and cover a range of cross-curricular topics. Practise in writing, spelling, editing and comprehension is provided at every level.

Contributions to Group Theory

Contributions to Group Theory PDF

Author: Kenneth I. Appel

Publisher: American Mathematical Soc.

Published: 1984

Total Pages: 519

ISBN-13: 0821850350

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This volume grew out of a desire by the editors to honor their teacher, Roger Lyndon, on the occasion of his sixty-fifth birthday. Five short articles about Lyndon and his contributions to mathematics, as well as twenty-seven invited research papers in combinatorial group theory and closely related areas are contained in this book. It is a tribute to Lyndon's mathematical breadth that papers covering such a wide array of topics are all closely related to the work he has done. Several of the articles fall into subfields of combinatorial group theory, areas in which much of the initial work was done by Lyndon. Remaining research articles fall into various subfields of homological groups, another area in which he has made major contributions. Research articles, written by some of the leading practitioners in the field, are listed below. There is a biographical essay about Lyndon by Kenneth Appel, and there are expository articles about his work by Saunders MacLane, John Ratcliffe, Jerome Keisler, and Paul Schupp. MacLane describes the results in Lyndon's doctoral thesis and explains how they fit into the early history of spectral sequences while Ratcliffe presents Lyndon's fundamental work in cohomology of groups in the early part of his career. His work in logic, especially his fundamental results in model theory in the mid 1950s is discussed by Keisler. Lyndon's contribution to group theory over the past twenty years is described by Schupp.

Developments in Language Theory

Developments in Language Theory PDF

Author: Cristian S. Calude

Publisher: Springer Science & Business Media

Published: 2004-11-29

Total Pages: 440

ISBN-13: 3540240144

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This book constitutes the refereed proceedings of the 8th International Conference on Developments in Language Theory, DLT 2004, held in Auckland, New Zealand in December 2004. The 30 revised full papers presented together with 5 invited papers were carefully reviewed and selected from 47 submissions. The main subjects are formal languages, automata, conventional and unconventional computation theory, and applications of automata theory. Among the topics addressed are grammars and acceptors for strings, graphs, and arrays; efficient text algorithms, combinatorial and algebraic properties of languages; decision problems; relations to complexity theory and logic; picture description and analysis; cryptography; concurrency; DNA computing; and quantum computing.

Topological and Asymptotic Aspects of Group Theory

Topological and Asymptotic Aspects of Group Theory PDF

Author: R. I. Grigorchuk

Publisher: American Mathematical Soc.

Published: 2006

Total Pages: 234

ISBN-13: 0821837567

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The articles in this volume are based on the talks given at two special sessions at the AMS Sectional meetings held in 2004. The articles cover various topological and asymptotic aspects of group theory, such as hyperbolic and relatively hyperbolic groups, asymptotic cones, Thompson's group, Nielsen fixed point theory, homology, groups acting on trees, groups generated by finite automata, iterated monodromy groups, random walks on finitely generated groups, heat kernels, and currents on free groups.

Turing's Legacy

Turing's Legacy PDF

Author: Rod Downey

Publisher: Cambridge University Press

Published: 2014-05

Total Pages: 540

ISBN-13: 1107043484

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A collection of essays celebrating the influence of Alan Turing's work in logic, computer science and related areas.

Grobner-shirshov Bases: Normal Forms, Combinatorial And Decision Problems In Algebra

Grobner-shirshov Bases: Normal Forms, Combinatorial And Decision Problems In Algebra PDF

Author: Leonid Bokut

Publisher: World Scientific

Published: 2020-06-16

Total Pages: 308

ISBN-13: 9814619507

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The book is about (associative, Lie and other) algebras, groups, semigroups presented by generators and defining relations. They play a great role in modern mathematics. It is enough to mention the quantum groups and Hopf algebra theory, the Kac-Moody and Borcherds algebra theory, the braid groups and Hecke algebra theory, the Coxeter groups and semisimple Lie algebra theory, the plactic monoid theory. One of the main problems for such presentations is the problem of normal forms of their elements. Classical examples of such normal forms give the Poincaré-Birkhoff-Witt theorem for universal enveloping algebras and Artin-Markov normal form theorem for braid groups in Burau generators.What is now called Gröbner-Shirshov bases theory is a general approach to the problem. It was created by a Russian mathematician A I Shirshov (1921-1981) for Lie algebras (explicitly) and associative algebras (implicitly) in 1962. A few years later, H Hironaka created a theory of standard bases for topological commutative algebra and B Buchberger initiated this kind of theory for commutative algebras, the Gröbner basis theory. The Shirshov paper was largely unknown outside Russia. The book covers this gap in the modern mathematical literature. Now Gröbner-Shirshov bases method has many applications both for classical algebraic structures (associative, Lie algebra, groups, semigroups) and new structures (dialgebra, pre-Lie algebra, Rota-Baxter algebra, operads). This is a general and powerful method in algebra.