Godel, Escher, Bach: An Eternal Golden Braid, Douglas R. Hofstadter. New York: Vintage Books, $8.95.

This Pulitzer Prize-winner examines the connection between the work of Kurt Godel, the mathematician, M. C. Escher, the artist, and J. S. Bach, the composer. Douglas Hofstadter uses the theme of Bach's "Musical Offering" throughout to improvise his own "Metamusical Offering," as he weaves through a discussion of the interplay between different levels in Bach and the parallel ideas in Escher's drawings and Godel's Theorem.