LEGENDRE, Adrien Marie (1752-1833). Essai sur la thorie des nombres. Paris: Duprat, An VI [1798].

Details
LEGENDRE, Adrien Marie (1752-1833). Essai sur la thorie des nombres. Paris: Duprat, An VI [1798].

4o (263 x 197 mm). Tables in text. Contemporary calf gilt (rebacked, preserving original spine).

FIRST EDITION. Contains Legendre's principal contribution to number theory, an improved exposition of his law of reciprocity of quadratic residues. "The Essai also introduced the symbol (a/p), still used to express the law of reciprocity; and gave an outline of Legendre's law of the distribution of prime numbers, which he improved in the second edition" (Norman). Thornton-Tully 148; Norman 1325.