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"... collection of photographs assembled around a particular theme: in each image, the gaze of the subject is averted, the face obscured or the eyes firmly closed. The pictures present a catalog of anti-portraiture, characterized at first glance by what its subjects conceal, not by what the camera reveals. Amassed over the course of thirty years by New York collector W. M. Hunt, the collection includes works by masters such as Richard Avedon, Diane Arbus, Imogen Cunningham, William Klein, Robert Mapplethorpe, and Robert Frank as well as lesser-known artists and vernacular images." --book jacket.
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The theme of this book is formed by a pair of concepts: the concept of formal language as carrier of the precise expression of meaning, facts and problems, and the concept of algorithm or calculus, i.e. a formally operating procedure for the solution of precisely described questions and problems.The book is a unified introduction to the modern theory of these concepts, to the way in which they developed first in mathematical logic and computability theory and later in automata theory, and to the theory of formal languages and complexity theory. Apart from considering the fundamental themes and classical aspects of these areas, the subject matter has been selected to give priority throughout to the new aspects of traditional questions, results and methods which have developed from the needs or knowledge of computer science and particularly of complexity theory.It is both a textbook for introductory courses in the above-mentioned disciplines as well as a monograph in which further results of new research are systematically presented and where an attempt is made to make explicit the connections and analogies between a variety of concepts and constructions.
Together with a list of auxiliary and cooperating societies, their officers, and other data.