BELNAP, Nuel. American, b. 1930. Genres: Philosophy. Career: Yale University, instructor, 1958-60, assistant professor of philosophy, 1960-63; University of Pittsburgh, associate professor, 1963-66, professor of philosophy, sociology, and history and philosophy of science, 1966-, director of graduate studies in philosophy, 1964-67, 1970-72, senior research associate at Center for the Philosophy of Science, 1964-78, fellow of the center, 1979-, ex officio member of Humanities Council, 1974-75, Alan Ross Anderson Lecturer, 1983-84, Alan Ross Anderson Distinguished Professor, 1984-, professor in Intelligent Systems Program, 1988-. Oxford University, senior research fellow with Programming Research Group, 1970; University of California, Irvine, visiting professor, winter, 1973; Australian National University, visiting fellow, 1976; Indiana University Bloomington, Visiting Oscar R. Ewing Professor of Philosophy, autumns, 1977-79; U.S.S.R. Academy of Sciences, visiting scholar of Institute of Philosophy, 1991; University of Padua, visiting professor, 1991. University of Illinois Foundation, member, 1973-; consultant to Office of Naval Research, Westinghouse Research Laboratory, and System Development Corp. Publications: Entailment: The Logic of Relevance and Necessity, Vol. I (with A.R. Anderson), 1975, Vol. II (with Anderson and J.M. Dunn), 1992; (with T.B. Steel) The Logic of Questions and Answers, 1976; (with A. Gupta) The Revision Theory of Truth, 1993. Work represented in anthologies. Contributor of articles and reviews to scholarly journals. Address: Department of Philosophy, University of Pittsburgh, Pittsburgh, PA 15260, U.S.A.