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calculated adventures in electronica... soundtracks for intellectual stimulation Pierre Simon de Laplace was a French mathematician and astronomer who lived on the planet from 1749 to 1827. At the age of just 19, he was appointed Professor of Mathematics in Paris. His research on the eccentricities and inclinations of planetary motions helped prove their stability. His papers on integral calculus discussed finite differences, differential equations and varied subjects of astronomy, which gave rise to the analysis of Spherical Harmonics. He described the nature of the solar system in his "Exposition of the System of the World," through his famous Nebular Hypothesis, which viewed the solar system as originating from the contracting and cooling of large, flattened, and slowly rotating clouds of incandescent gas. His acclaimed "Treatise on Celestial Mechanics," based partly on gravitational theory, further described the relationship of the planets within our solar system. His Theory of Analytical Probabilites helped us understand and develop systems of mathematical probabilites. Laplace's most enduring contribution to mathematics is clearly the differential operator, called the "Laplacian" in his honor. This fundemental operator describes electrostatics, wave propagation, heat flow and has deep generalizations to modern mathematical physics. The Laplacian of one is zero.