01986nam a2200217Ia 4500 CTU_134126 210402s9999 xx 000 0 und d 3185000 519.2 A773 Arratia, Richard Logarithmic combinatorial structures A probabilitic approach Richard Arratia, A.D. Barbour, Simon Tavaré Zürich European Mathematical Society 2003. The elements of many classical combinatorial structures can be naturally decomposed into components. Permutations can be decomposed into cycles, polynomials over a finite field into irreducible factors, mappings into connected components. In all of these examples, and in many more, there are strong similarities between the numbers of components of different sizes that are found in the decompositions of "typical" elements of large size. For instance, the total number of components grows logarithmically with the size of the element, and the size of the largest component is an appreciable fraction of the whole. This book explains the similarities in asymptotic behavior as the result of two basic properties shared by the structures: the conditioning relation and the logarithmic condition. The discussion is conducted in the language of probability, enabling the theory to be developed under rather general and explicit conditions; for the finer conclusions, Stein's method emerges as the key ingredient. The book is thus of particular interest to graduate students and researchers in both combinatorics and probability theory. Distributed within the Americas by the American Mathematical Society. Asymptotic distribution (Probability theory),Combinatorial probabilities.,Stochastic processes.,Asymptotic expansions.,Phân phối tiệm cận (thuyết xác suất) Nguyễn Kim Chung Trung tâm Học liệu Trường Đại học Cần Thơ