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I. 108 (1) pages. / II. 202 pages, printed manuscript. / III. IV, 74 pages. / IV. (2) 146 pages. - BOUND TOGETHER in a gilt-decorated and -titled strong brown halfleather-binding of the period over 4 raised bands with green-and-black marbled panels; 4to.(ca. 27 x 22 x 4 cm; ca. 1,7 kg.). *** [Verlängerter FRÜHSOMMER-VERKAUF / Ongoing EARLY SUMMER-SALE: um über 20% REDUZIERTER PREIS bis Donnerstag, 09.07.2026 / PRICE-REDUCTION of over 20% until Thursday, July 09; vorheriger Preis / previously EUR 280,-] --- FIRST EDITIONS, LEATHERBOUND ORIGINALS. - Prof. Charles Hermite (1822-1901) was a French mathematician who did research concerning number theory, quadratic forms, invariant theory, orthogonal polynomials, elliptic functions, and algebra. He was the first to prove that 'e', the base of natural logarithms, is a transcendental number. His methods were used later by Ferdinand von Lindemann to prove that 'Pi' is transcendental. --- Corners slightly-, top of spine and sharp corners stronger rubbed; titlepage of #I with old officially cancelled librarystamps, few pages with slight foxing; A VERY GOOD COPY OF THE COHERENT COLLECTION.