"Collection of various papers presented at the monthly meetings of the Mathematics Section of the New York Academy of Sciences." Includes bibliographical references.

Introduction / Paul R. Meyer -- Nonassociative multiplication / Michael Aissen and Brian Shay -- Deciding some undecidable topological statements / W.W. Comfort -- Georg Cantor's creation of transfinite set theory : personality and psychology in the history of mathematics / Joseph W. Dauben -- Computational complexity : algorithms with fewest operations / Julian D. Laderman -- Crude theoretical models of jet-driven wind instruments and the Edgetone / Harry E. Rauch -- Structure and stability in weighted digraph models / Fred S. Roberts -- Vibrations in fluid dynamics / Richard Sacksteder -- Trees and ball games / Raymond M. Smullyan -- The four color problem / Joel G. Stemple.