Mémoire sur diverses formules d'analyse.

(Paris, Bachelier), 1841. 4to. Without wrappers. In ""Comptes rendus hebdomadaires des séances de l’Académie des sciences"", Vol. XII, No 6. Pp. (267-) 316. (Entire issue offered). Cauchy's paper: pp. 283-298. Some scattered brownspots.

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First printing of an importent paper in information theory - the paper stating the earliest version of what will later be known as the ""Nyquist Sampling Theorem"", describing how many and what kind of samples are needed to construct a curve.""The theorem will be formulated more completely in 1928 and become one of the cornerstones of information theory"" (Bryan Bunch, 1841 M).