**Martin Davis: Computer Science Pioneer**

Dover's publishing relationship with Martin Davis, now retired from NYU and living in Berkeley, goes back to 1985 when we reprinted his classic 1958 book *Computability and Unsolvability,* widely regarded as a classic of theoretical computer science. A graduate of New York's City College, Davis received his PhD from Princeton in the late 1940s and became one of the first computer programmers in the early 1950s, working on the ORDVAC computer at The University of Illinois. He later settled at NYU where he helped found the Computer Science Department.

Not many books from the infancy of computer science are still alive after several decades, but *Computability and Unsolvability* is the exception. And *The Undecidable* is an anthology of fundamental papers on undecidability and unsolvability by major figures in the field including Godel, Church, Turing, Kleene, and Post.

**Critical Acclaim for ***Computability and Unsolvability*:

"This book gives an expository account of the theory of recursive functions and some of its applications to logic and mathematics. It is well written and can be recommended to anyone interested in this field. No specific knowledge of other parts of mathematics is presupposed. Though there are no exercises, the book is suitable for use as a textbook." — J. C. E. Dekker, *Bulletin of the American Mathematical Society*, 1959

**Critical Acclaim for ***The Undecidable*:

"A valuable collection both for original source material as well as historical formulations of current problems." — *The Review of Metaphysics*

"Much more than a mere collection of papers . . . a valuable addition to the literature." — *Mathematics of Computation*