**About the Author**

Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today. Born in London in 1959, he was educated at Eton, Oxford and Caltech. He published his first scientific paper at the age of fifteen, and had received his PhD in theoretical physics from Caltech by the age of twenty. Wolfram's early scientific work was mainly in high-energy physics, quantum field theory and cosmology, and included several now-classic results. Having started to use computers in 1973, Wolfram rapidly became a leader in the emerging field of scientific computing, and in 1979 he began the construction of SMPthe first modern computer algebra systemwhich he released commercially in 1981.

In recognition of his early work in physics and computing, Wolfram became in 1981 the youngest recipient of a MacArthur Prize Fellowship. Late in 1981, Wolfram then set out on an ambitious new direction in science: to develop a general theory of complexity in nature. Wolfram's key idea was to use computer experiments to study the behavior of simple computer programs known as cellular automata. And in 1982 he made the first in a series of startling discoveries about the origins of complexity. The publication of Wolfram's papers on cellular automata led to a major shift in scientific thinking, and laid the groundwork for a new field of science that Wolfram named "complex systems research".

Through the mid-1980s, Wolfram continued his work on complexity, discovering a number of fundamental connections between computation and nature, and inventing such concepts as computational irreducibility. Wolfram's work led to a wide range of applicationsand provided the main scientific foundations for the popular movements known as complexity theory and artificial life. Wolfram himself used his ideas to develop a new randomness generation system and a new approach to computational fluid dynamicsboth of which are now in widespread use.

Following his scientific work on complex systems research, Wolfram in 1986 founded the first research center and first journal in the field. Then, after a highly successful career in academiafirst at Caltech, then at the Institute for Advanced Study in Princeton, and finally as Professor of Physics, Mathematics and Computer Science at the University of IllinoisWolfram launched Wolfram Research, Inc.

Wolfram began the development of Mathematica in late 1986. The first version of Mathematica was released on June 23, 1988, and was immediately hailed as a major advance in the field of computing. In the years that followed, the popularity of Mathematica grew rapidly, and Wolfram Research became established as a world leader in the software industry, widely recognized for excellence in both technology and business.

Following the release of Mathematica Version 2 in 1991, Wolfram began to divide his time between Mathematica development and scientific research. Building on his work from the mid-1980s, Wolfram made a sequence of major discoveries to be described in his forthcoming book A New Kind of Science. In addition to solving some fundamental existing scientific problems, Wolfram's recent work points the way to a whole new approach to science and mathematics.

Wolfram has been president and CEO of Wolfram Research since its inception, and remains personally responsible for the design of the core Mathematica system.

Other books by Stephen Wolfram:

Cellular Automata and Complexity: Collected Papers (1993)S0.1.11.3A New Kind of Science (forthcoming)(For information send email to info@new-science.com)S0.1.11.4Author's web site:http://www.wolfram.com/s.wolframS0.1.11.5Author's address:email: s.wolfram@wolfram.commail: 100 Trade Center Drive Champaign, IL 61820, USAS0.1.11.6For comments on this book or Mathematicasend email tocomments@wolfram.comS0.1.11.7