Download Combinatorial Geometry by János Pach, Pankaj K. Agarwal PDF

By János Pach, Pankaj K. Agarwal

A whole, self-contained creation to a robust and resurging mathematical self-discipline . Combinatorial Geometry provides and explains with entire proofs one of the most very important effects and techniques of this quite younger mathematical self-discipline, all started via Minkowski, Fejes Toth, Rogers, and Erd???s. approximately part the consequences offered during this publication have been found over the last 20 years, and so much have by no means ahead of seemed in any monograph. Combinatorial Geometry can be of specific curiosity to mathematicians, laptop scientists, physicists, and fabrics scientists attracted to computational geometry, robotics, scene research, and computer-aided layout. it's also a good textbook, whole with end-of-chapter difficulties and tricks to their options that support scholars make clear their realizing and try their mastery of the cloth. themes coated include:
* Geometric quantity theory
* Packing and overlaying with congruent convex disks
* Extremal graph and hypergraph theory
* Distribution of distances between finitely many points
* Epsilon-nets and Vapnik--Chervonenkis dimension
* Geometric graph theory
* Geometric discrepancy theory
* and masses extra

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Additional resources for Combinatorial Geometry

Example text

In particular, if C is a circle, then it follows that Qn is a regular «-gon concentric with C. 4). 9. 15. Let C\,... ,C„ be a system of noncrossing convex discs, and let H be a fixed hexagon. Assume that each C, has an interior point that belongs to H but not to any other Cj (j 1 i). ,). /=i and "£"= | Si < 6n, where s, denotes the number of sides of R/. 14. Let D\ and D2 denote the incircle and circumcircle of H, respectively. 3) i=l for otherwise there is nothing to prove. We may also assume without loss of generality that every C, has an interior point in common with H that does not belong to any other Cj (j J i).

4. in the plane, Given a packing C with congruent copies of a convex disc C 2, .

In his lecture at the Scandinavian Natural Science Congress in 1892, A. Thue extended this result to any packing of congruent circles. In other words, he proved that the densest packing of equal circles is necessarily lattice-like. Thue's theorem, as well as its dual counterpart for covering (established by Kershner in 1939), remained largely unnoticed until the 1950s, when L. Fejes Toth discovered many far-reaching generalizations of these results. His seminal book (L. Fejes Toth, 1953) laid the foundations of a rich discipline: the theory of packing and covering.

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