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The Internally 4 Connected Binary Matroids With No Mk 33 Minor
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Book Synopsis The Internally 4-Connected Binary Matroids with No $M(K_{3,3})$-Minor by : Dillon Mayhew
Download or read book The Internally 4-Connected Binary Matroids with No $M(K_{3,3})$-Minor written by Dillon Mayhew and published by American Mathematical Soc.. This book was released on 2010 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors give a characterization of the internally $4$-connected binary matroids that have no minor isomorphic to $M(K_{3,3})$. Any such matroid is either cographic, or is isomorphic to a particular single-element extension of the bond matroid of a cubic or quartic Mobius ladder, or is isomorphic to one of eighteen sporadic matroids.
Book Synopsis The Internally 4-connected Binary Matroids with No M(K3,3)-minor by : Dillon Mayhew
Download or read book The Internally 4-connected Binary Matroids with No M(K3,3)-minor written by Dillon Mayhew and published by American Mathematical Soc.. This book was released on with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Volume 208, number 981 (end of volume )."
Book Synopsis Some Excluded-minor Theorems for Binary Matroids by : Xiangqian Zhou
Download or read book Some Excluded-minor Theorems for Binary Matroids written by Xiangqian Zhou and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: The purpose of this dissertation is to generalize some important excluded-minor theorems for graphs to binary matroids. Chapter 3 contains joint work with Hongxun Qin, in which we show that an internally 4-connected binary matroid with no M(K5)-, M*(K5)-, M(K3, 3)-, or M*(K3, 3)-minor is either planar graphic, or isomorphic to F-- or F*--. As a corollary, we prove an extremal result for the class of binary matroids without these minors. In Chapter 4, it is shown that, except for 6 'small' known matroids, every internally 4-connected non-regular binary matroid has either a [widetilde]K5- or a [widetilde]K5*-minor. Using this result, we obtain a computer-free proof of Dharmatilake's conjecture about the excluded minors for binary matroids with branch-width at most 3. D.W. Hall proved that K5 is the only simple 3-connected graph with a K5-minor that has no K3, 3-minor. In Chapter 5, we determine all the internally 4-connected binary matroids with an M(K5)-minor that have no M(K3, 3)-minor. In chapter 6, it is shown that there are only finitely many non-regular internally 4-connected matroids in the class of binary matroids with no M(K'3, 3)- or M*(K'3, 3)-minor, where K'3, 3 is the graph obtained from K3, 3 by adding an edge between a pair of non-adjacent vertices. In Chapter 7, we summarize the results and discuss about open problems. We are particularly interested in the class of binary matroids with no M(K5)- or M*(K5)-minor. Unfortunately, we tried without success to find all the internally 4-connected members of this class. However, it is shown that the matroid J1 is the smallest splitter for the above class.
Book Synopsis On Binary and Regular Matroids Without Small Minors by : Kayla Davis Harville
Download or read book On Binary and Regular Matroids Without Small Minors written by Kayla Davis Harville and published by . This book was released on 2013 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results of this dissertation consist of excluded-minor results for Binary Matroids and excluded-minor results for Regular Matroids. Structural theorems on the relationship between minors and k- sums of matroids are developed here in order to provide some of these characterizations. Chapter 2 of the dissertation contains excluded-minor results for Binary Matroids. The first main result of this dissertation is a characterization of the internally 4-connected binary matroids with no minor that is isomorphic to the cycle matroid of the prism+e graph. This characterization generalizes results of Mayhew and Royle [18] for binary matroids and results of Dirac [8] and Lovasz [15] for graphs. The results of this chapter are then extended from the class of internally 4-connected matroids to the class of 3-connected matroids. Chapter 3 of the dissertation contains the second main result, a decomposition theorem for regular matroids without certain minors. This decomposition theorem is used to obtain excluded-minor results for Regular Matroids. Wagner, Lovasz, Oxley, Ding, Liu, and others have characterized many classes of graphs that are H- free for graphs H with at most twelve edges (see [7]). We extend several of these excluded-minor characterizations to regular matroids in Chapter 3. We also provide characterizations of regular matroids excluding several graphic matroids such as the octahedron, cube, and the Mobius Ladder on eight vertices. Both theoretical and computer-aided proofs of the results of Chapters 2 and 3 are provided in this dissertation.
Book Synopsis Minors of 3-connected Matroids and Adjoints of Binary Matroids by : Collette René Coullard
Download or read book Minors of 3-connected Matroids and Adjoints of Binary Matroids written by Collette René Coullard and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Clones and Minors of Matroids by : Carla D. Cotwright
Download or read book Clones and Minors of Matroids written by Carla D. Cotwright and published by . This book was released on 2006 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results that relate clones in a matroid to minors of that matroid are given. Also, matroids that contain few clonal-classes are characterized. An example of a result of the first type that is given is that if X is a four-element set in a 3-connected non-binary matroid M and X contains a clone-pair, then M has a U2.4-minor that uses X. This result generalizes several results from the literature such as Tutte's Excluded-Minor characterization of the binary matroids. An example of a result of the second type is Theorem 4.5.2 where the matroids having exactly two clonal-classes are characterized using certain truncations of the direct sum of two uniform matroids.
Book Synopsis Iterative Methods in Combinatorial Optimization by : Lap Chi Lau
Download or read book Iterative Methods in Combinatorial Optimization written by Lap Chi Lau and published by Cambridge University Press. This book was released on 2011-04-18 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the advent of approximation algorithms for NP-hard combinatorial optimization problems, several techniques from exact optimization such as the primal-dual method have proven their staying power and versatility. This book describes a simple and powerful method that is iterative in essence and similarly useful in a variety of settings for exact and approximate optimization. The authors highlight the commonality and uses of this method to prove a variety of classical polyhedral results on matchings, trees, matroids and flows. The presentation style is elementary enough to be accessible to anyone with exposure to basic linear algebra and graph theory, making the book suitable for introductory courses in combinatorial optimization at the upper undergraduate and beginning graduate levels. Discussions of advanced applications illustrate their potential for future application in research in approximation algorithms.
Book Synopsis Divisors and Sandpiles by : Scott Corry
Download or read book Divisors and Sandpiles written by Scott Corry and published by American Mathematical Soc.. This book was released on 2018-07-23 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Divisors and Sandpiles provides an introduction to the combinatorial theory of chip-firing on finite graphs. Part 1 motivates the study of the discrete Laplacian by introducing the dollar game. The resulting theory of divisors on graphs runs in close parallel to the geometric theory of divisors on Riemann surfaces, and Part 1 culminates in a full exposition of the graph-theoretic Riemann-Roch theorem due to M. Baker and S. Norine. The text leverages the reader's understanding of the discrete story to provide a brief overview of the classical theory of Riemann surfaces. Part 2 focuses on sandpiles, which are toy models of physical systems with dynamics controlled by the discrete Laplacian of the underlying graph. The text provides a careful introduction to the sandpile group and the abelian sandpile model, leading ultimately to L. Levine's threshold density theorem for the fixed-energy sandpile Markov chain. In a precise sense, the theory of sandpiles is dual to the theory of divisors, and there are many beautiful connections between the first two parts of the book. Part 3 addresses various topics connecting the theory of chip-firing to other areas of mathematics, including the matrix-tree theorem, harmonic morphisms, parking functions, M-matrices, matroids, the Tutte polynomial, and simplicial homology. The text is suitable for advanced undergraduates and beginning graduate students.
Book Synopsis Matroid Applications by : Neil White
Download or read book Matroid Applications written by Neil White and published by Cambridge University Press. This book was released on 1992-03-05 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume, the third in a sequence that began with The Theory of Matroids and Combinatorial Geometries, concentrates on the applications of matroid theory to a variety of topics from engineering (rigidity and scene analysis), combinatorics (graphs, lattices, codes and designs), topology and operations research (the greedy algorithm).
Download or read book Digraphs written by Jorgen Bang-Jensen and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 769 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of directed graphs (digraphs) has developed enormously over recent decades, yet the results are rather scattered across the journal literature. This is the first book to present a unified and comprehensive survey of the subject. In addition to covering the theoretical aspects, the authors discuss a large number of applications and their generalizations to topics such as the traveling salesman problem, project scheduling, genetics, network connectivity, and sparse matrices. Numerous exercises are included. For all graduate students, researchers and professionals interested in graph theory and its applications, this book will be essential reading.
Book Synopsis Graph Theory with Applications by : John Adrian Bondy
Download or read book Graph Theory with Applications written by John Adrian Bondy and published by London : Macmillan Press. This book was released on 1976 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ant Colony Optimization by : Marco Dorigo
Download or read book Ant Colony Optimization written by Marco Dorigo and published by MIT Press. This book was released on 2004-06-04 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of the rapidly growing field of ant colony optimization that describes theoretical findings, the major algorithms, and current applications. The complex social behaviors of ants have been much studied by science, and computer scientists are now finding that these behavior patterns can provide models for solving difficult combinatorial optimization problems. The attempt to develop algorithms inspired by one aspect of ant behavior, the ability to find what computer scientists would call shortest paths, has become the field of ant colony optimization (ACO), the most successful and widely recognized algorithmic technique based on ant behavior. This book presents an overview of this rapidly growing field, from its theoretical inception to practical applications, including descriptions of many available ACO algorithms and their uses. The book first describes the translation of observed ant behavior into working optimization algorithms. The ant colony metaheuristic is then introduced and viewed in the general context of combinatorial optimization. This is followed by a detailed description and guide to all major ACO algorithms and a report on current theoretical findings. The book surveys ACO applications now in use, including routing, assignment, scheduling, subset, machine learning, and bioinformatics problems. AntNet, an ACO algorithm designed for the network routing problem, is described in detail. The authors conclude by summarizing the progress in the field and outlining future research directions. Each chapter ends with bibliographic material, bullet points setting out important ideas covered in the chapter, and exercises. Ant Colony Optimization will be of interest to academic and industry researchers, graduate students, and practitioners who wish to learn how to implement ACO algorithms.
Book Synopsis Handbook of Enumerative Combinatorics by : Miklos Bona
Download or read book Handbook of Enumerative Combinatorics written by Miklos Bona and published by CRC Press. This book was released on 2015-03-24 with total page 1073 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the state of the art, the Handbook of Enumerative Combinatorics brings together the work of today's most prominent researchers. The contributors survey the methods of combinatorial enumeration along with the most frequent applications of these methods.This important new work is edited by Miklos Bona of the University of Florida where he
Book Synopsis Combinatorial Optimization by : Bernhard Korte
Download or read book Combinatorial Optimization written by Bernhard Korte and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This well-written textbook on combinatorial optimization puts special emphasis on theoretical results and algorithms with provably good performance, in contrast to heuristics. The book contains complete (but concise) proofs, as well as many deep results, some of which have not appeared in any previous books.
Book Synopsis Analytic Combinatorics in Several Variables by : Robin Pemantle
Download or read book Analytic Combinatorics in Several Variables written by Robin Pemantle and published by Cambridge University Press. This book was released on 2013-05-31 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at graduate students and researchers in enumerative combinatorics, this book is the first to treat the analytic aspects of combinatorial enumeration from a multivariate perspective.
Book Synopsis The World According to Mister Rogers by : Fred Rogers
Download or read book The World According to Mister Rogers written by Fred Rogers and published by Hachette Books. This book was released on 2003-10-08 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experience a timeless collection of wisdom on love, friendship, respect, individuality, and honesty from the beloved PBS series Mister Rogers' Neighborhood. There are few personalities who evoke such universal feelings of warmth as Fred Rogers. An enduring presence in American homes for more than thirty years, his plainspoken wisdom continues to guide and comfort many. The World According to Mister Rogers distills the legacy and singular worldview of this beloved American figure. An inspiring collection of stories, anecdotes, and insights—with sections devoted to love, friendship, respect, individuality, and honesty—The World According to Mister Rogers reminds us that there is much more in life that unites us than divides us. Culled from Fred Rogers' speeches, program transcripts, books, letters, and interviews, along with some of his never-before-published writings, The World According to Mister Rogers is a testament to a man who served as a role model to millions—and continues to inspire us all with his legacy.
