(Champaign, Illinois: Wolfram Media, 2002). First edition. SIGNED BY WOLFRAM and dated in the year of publication. Wolfram is founder and CEO of Wolfram Research and designer of the computer algebra system "Mathematica" and answer engine, "Wolfram Alpha," which answers queries using the approach described herein. (Apple's "Siri" uses the Wolfram Alpha answer engine.) A huge book, 8 x 9.75" printed paper boards; over 1200 pages; profusely illustrated. Spine a bit sloped as one might expect with such a massive book, otherwise book and dust jacket are fine with only the barest wear. Scare in the first printing and signed.