Claude Berge was a French mathematician known for his work on graph and hypergraph theory. Beyond his contributions to mathematics, he was also a member of the Oulipo group, where he explored the creation of fiction. This unique background allowed him to bridge the worlds of logic and literature, bringing a distinct structural and inventive approach to his narrative experiments.
Excellent study of sets in topological spaces and topological vector spaces includes systematic development of the properties of multi-valued functions. Topics include families of sets, topological spaces, mappings of one set into another, ordered sets, more. Examples included from different domains. 1963 edition.