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Author: Peter Orlik
Publisher: American Mathematical Soc.
ISBN: 9780821889169
Category : Mathematics
Languages : en
Pages : 122
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Book Description
An arrangement of hyperplanes is a finite collection of codimension one subspaces in a finite-dimensional vector space. Arrangements occur in several branches of mathematics: combinatorics, braids, hypergeometric functions, reflection groups, singularities, and coding theory. This book, based on lectures presented by the author at the CBMS Regional Conference held at Northern Arizona University in June 1988, provides the first introduction to the study of the topology of the complement of an arrangement in a complex vector space. The author discusses basic combinatorial tools, as well as algebras associated to the arrangement, differential forms, the cohomology and the homotopy type of the complement, free arrangements, and reflection arrangements. With a particular emphasis on topological aspects, this book provides an excellent introduction to current activity in this area.
Author: Peter Orlik
Publisher: American Mathematical Soc.
ISBN: 9780821889169
Category : Mathematics
Languages : en
Pages : 122
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Book Description
An arrangement of hyperplanes is a finite collection of codimension one subspaces in a finite-dimensional vector space. Arrangements occur in several branches of mathematics: combinatorics, braids, hypergeometric functions, reflection groups, singularities, and coding theory. This book, based on lectures presented by the author at the CBMS Regional Conference held at Northern Arizona University in June 1988, provides the first introduction to the study of the topology of the complement of an arrangement in a complex vector space. The author discusses basic combinatorial tools, as well as algebras associated to the arrangement, differential forms, the cohomology and the homotopy type of the complement, free arrangements, and reflection arrangements. With a particular emphasis on topological aspects, this book provides an excellent introduction to current activity in this area.
Author: Alexandru Dimca
Publisher: Springer
ISBN: 3319562215
Category : Mathematics
Languages : en
Pages : 208
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Book Description
This textbook provides an accessible introduction to the rich and beautiful area of hyperplane arrangement theory, where discrete mathematics, in the form of combinatorics and arithmetic, meets continuous mathematics, in the form of the topology and Hodge theory of complex algebraic varieties. The topics discussed in this book range from elementary combinatorics and discrete geometry to more advanced material on mixed Hodge structures, logarithmic connections and Milnor fibrations. The author covers a lot of ground in a relatively short amount of space, with a focus on defining concepts carefully and giving proofs of theorems in detail where needed. Including a number of surprising results and tantalizing open problems, this timely book also serves to acquaint the reader with the rapidly expanding literature on the subject. Hyperplane Arrangements will be particularly useful to graduate students and researchers who are interested in algebraic geometry or algebraic topology. The book contains numerous exercises at the end of each chapter, making it suitable for courses as well as self-study.
Author: Peter Orlik
Publisher: Springer Science & Business Media
ISBN: 9783540552598
Category : Mathematics
Languages : en
Pages : 352
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Book Description
An arrangement of hyperplanes is a finite collection of codimension one affine subspaces in a finite dimensional vector space. Arrangements have emerged independently as important objects in various fields of mathematics such as combinatorics, braids, configuration spaces, representation theory, reflection groups, singularity theory, and in computer science and physics. This book is the first comprehensive study of the subject. It treats arrangements with methods from combinatorics, algebra, algebraic geometry, topology, and group actions. It emphasizes general techniques which illuminate the connections among the different aspects of the subject. Its main purpose is to lay the foundations of the theory. Consequently, it is essentially self-contained and proofs are provided. Nevertheless, there are several new results here. In particular, many theorems that were previously known only for central arrangements are proved here for the first time in completegenerality. The text provides the advanced graduate student entry into a vital and active area of research. The working mathematician will findthe book useful as a source of basic results of the theory, open problems, and a comprehensive bibliography of the subject.
Author: Madeleine Wickham
Publisher: Macmillan
ISBN: 1429926864
Category : Fiction
Languages : en
Pages : 304
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Book Description
Chloe needs a holiday. She's sick of making wedding dresses, her partner Philip has troubles at work, and the whole family wants a break. Her wealthy friend Gerard has offered the loan of his luxury villa in Spain--perfect. Hugh is not a happy man. His immaculate wife Amanda seems more interested in her new kitchen than in him, and he works so hard to pay for it, he barely has time for his children. Maybe he'll have a chance to bond with them on holiday. His old friend Gerard has lent them a luxury villa in Spain--perfect. Both families arrive at the villa and realize the awful truth--Gerard has double-booked. What no one else realizes is that Chloe and Hugh have a history; and as tensions rise within the two families, old passions resurface. It seems that Gerard's 'accidental' double booking may not be an accident after all...
Author: Peter Orlik
Publisher: American Mathematical Soc.
ISBN: 0821807234
Category : Mathematics
Languages : en
Pages : 122
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Book Description
An arrangement of hyperplanes is a finite collection of codimension one subspaces in a finite-dimensional vector space. Arrangements occur in several branches of mathematics: combinatorics, braids, hypergeometric functions, reflection groups, singularities, and coding theory. This book, based on lectures presented by the author at the CBMS Regional Conference held at Northern Arizona University in June 1988, provides the first introduction to the study of the topology of the complement of an arrangement in a complex vector space. The author discusses basic combinatorial tools, as well as algebras associated to the arrangement, differential forms, the cohomology and the homotopy type of the complement, free arrangements, and reflection arrangements. With a particular emphasis on topological aspects, this book provides an excellent introduction to current activity in this area.
Author: Branko Grnbaum
Publisher: American Mathematical Soc.
ISBN: 0821816594
Category : Mathematics
Languages : en
Pages : 122
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Book Description
Author: Thomas Zaslavsky
Publisher: American Mathematical Soc.
ISBN: 0821818546
Category : Mathematics
Languages : en
Pages : 116
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Book Description
An arrangement of hyperplanes of Euclidean or projective d-space is a finite set of hyperplanes, together with the induced partition of the space. Given the hyperplanes of an arrangement, how can the faces of the induced partition be counted? Heretofore this question has been answered for the plane, Euclidean 3-space, hyperplanes in general position, and the d-faces of the hyperplanes through the origin in Euclidean space. In each case the numbers of k-faces depend only on the incidences between intersections of the hyperplane, even though arrangements with the same intersection incidence pattern are not in general combinatorially isomorphic. We generalize this fact by demonstrating formulas for the numbers of k-faces of all Euclidean and projective arrangements, and the numbers of bounded k-faces of the former, as functions of the (semi)lattice of intersections of the hyperplanes, not dependent on the arrangement's combinatorial type.
Author: Cambridge Systematics
Publisher: Transportation Research Board
ISBN: 0309118069
Category : Transportation
Languages : en
Pages : 68
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Book Description
TRB's National Cooperative Freight Research Program (NCFRP) Report 2: Institutional Arrangements for Freight Transportation Systems explores successful and promising institutional arrangements designed to improve freight movement. The report examines 40 guidelines, reflecting lessons learned from existing arrangements, that are designed to help agencies and industry representatives work together to invest in and improve the freight transportation system. Appendices, consisting of a literature review, workshop material, detailed case studies, and interview guide, contained on a CD-ROM (CRP-CD-72), which accompanies the printed version of the report and is available for download as an ISO image online.
Author: Marcelo Aguiar
Publisher: American Mathematical Soc.
ISBN: 1470437112
Category : Mathematics
Languages : en
Pages : 639
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Book Description
This monograph studies the interplay between various algebraic, geometric and combinatorial aspects of real hyperplane arrangements. It provides a careful, organized and unified treatment of several recent developments in the field, and brings forth many new ideas and results. It has two parts, each divided into eight chapters, and five appendices with background material. Part I gives a detailed discussion on faces, flats, chambers, cones, gallery intervals, lunes and other geometric notions associated with arrangements. The Tits monoid plays a central role. Another important object is the category of lunes which generalizes the classical associative operad. Also discussed are the descent and lune identities, distance functions on chambers, and the combinatorics of the braid arrangement and related examples. Part II studies the structure and representation theory of the Tits algebra of an arrangement. It gives a detailed analysis of idempotents and Peirce decompositions, and connects them to the classical theory of Eulerian idempotents. It introduces the space of Lie elements of an arrangement which generalizes the classical Lie operad. This space is the last nonzero power of the radical of the Tits algebra. It is also the socle of the left ideal of chambers and of the right ideal of Zie elements. Zie elements generalize the classical Lie idempotents. They include Dynkin elements associated to generic half-spaces which generalize the classical Dynkin idempotent. Another important object is the lune-incidence algebra which marks the beginning of noncommutative Möbius theory. These ideas are also brought upon the study of the Solomon descent algebra. The monograph is written with clarity and in sufficient detail to make it accessible to graduate students. It can also serve as a useful reference to experts.
Author: Stefan Felsner
Publisher: Springer Science & Business Media
ISBN: 3322803031
Category : Mathematics
Languages : en
Pages : 179
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Book Description
Among the intuitively appealing aspects of graph theory is its close connection to drawings and geometry. The development of computer technology has become a source of motivation to reconsider these connections, in particular geometric graphs are emerging as a new subfield of graph theory. Arrangements of points and lines are the objects for many challenging problems and surprising solutions in combinatorial geometry. The book is a collection of beautiful and partly very recent results from the intersection of geometry, graph theory and combinatorics.
