The theory of buildings was introduced by J Tits in order to focus on geometric and combinatorial aspects of simple groups of Lie type. Since then the theory has blossomed into an extremely active field of mathematical research having deep connections with topics as diverse as algebraic groups, arithmetic groups, finite simple groups, and finite geometries, as well as with graph theory and other aspects of combinatorics. This volume is an up-to-date survey of the theory of buildings with special emphasis on its interaction with related geometries. As such it will be an invaluable guide to all those whose research touches on these themes. The articles presented here are by experts in their respective fields and are based on talks given at the 1988 Buildings and Related Geometries conference at Pingree Park, Colorado. Topics covered include the classification and construction of buildings, finite groups associated with building-like geometries, graphs and association schemes.

A rich examination of the role of portrait photography in the construction of Africa as a political idea

At a moment of profound change marked by decolonization and the Civil Rights period of the mid-twentieth century, photographers across Africa and the African diaspora used the photographic portrait in order to fuel incipient ideas of Africa. Published in conjunction with a groundbreaking exhibition at The Museum of Modern Art, New York, Ideas of Africa: Portraiture and Political Imagination charts international histories of resistance and liberation up to the present day in order to contend with the construction of Africa as a political idea, and the tools that artists used to forge it.

Featuring more than a hundred photographs by renowned artists of the time, such as Seydou Keïta, Malick Sidibé, and Jean Depara, and by contemporary artists of African descent, such as Samuel Fosso, Silvia Rosi, and Njideka Akunyili-Crosby, this richly illustrated publication explores modes of Pan-African possibility in powerful images of everyday people, where the personal was undeniably political. With an introduction by curator Oluremi C. Onabanjo, excerpts from landmark texts by V. Y. Mudimbe and Brent Hayes Edwards, and a conversation between Yasmina Price and Momtaza Mehri, Ideas of Africa highlights the potential of the photographic portrait as both a creative endeavor and political mechanism.