Theory of Convex Structures

Presented in this monograph is the current state-of-the-art in the theory of convex structures.\n\nThe notion of convexity covered here is considerably broader than the classic one; specifically, it is not restricted to the context of vector spaces. Classical concepts of order-convex sets (Birkhoff) and of geodesically convex sets (Menger) are directly inspired by intuition; they go back to the first half of this century. An axiomatic approach started to develop in the early Fifties. The author became attracted to it in the mid-Seventies, resulting in the present volume, in which graphs appear side-by-side with Banach spaces, classical geometry with matroids, and ordered sets with metric spaces. A wide variety of results has been included (ranging for instance from the area of partition calculus to that of continuous selection). The tools involved are borrowed from areas ranging from discrete mathematics to infinite-dimensional topology.Although addressed primarily to the researcher, parts of this monograph can be used as a basis for a well-balanced, one-semester graduate course.Theory of Convex Structures is written by van de Vel, M.L.J. and published by North Holland. ISBNs for Theory of Convex Structures are 9780444815057, 9780080933108, 0080933106 and the print ISBNs are 9780444815057, 0444815058.