JORDAN, .it-LEs (1850— ). An American musician, born in Willimantie, Conn. lle studied singing, with William Shakespeare in London, and Sbriglia in Paris. Upon his return to Amer ica he became choirmaster of Grace Church, Providence; and, upon its foundation. in Ma, conductor of the Anion Club. As a tenor soloist, conductor. or teacher, he was equally successful. Ife created the ride of Faust in Berlioz's Damn.( fiat? de Faust at !ts initial American performance in His compositions include some excellent and popular songs; the cantata. The Night Ser vice, for soli, chorus, and orchestra; the ballad "Barbara Frietehie," etc.
JORDAN, Z116ediIN'. MARIE ENNEMOND CA MILLE ( 1S2S— ). A French mathematician. born at Lyons. lie entered the Paris School of Mines in 1857. and received the degree of doctor of sciences in 1860, his theses being: (I) Sur le nombre des valcurs dcs fonctions; (2) Sur les Teriodes des fonctions inrer.ses des integrates des differentielles algebriqu(s (1660). The next year he was made engineer of mine., and in 1555 he was promoted to the rank of chief engineer. From 1872 he has devoted himself to the teaching of mathematics. In I576 he was made professor of analysis at the Polytechnic School, and in ISS3 he succeeded Lionville in the chair of mathematics at the College de France. In ]SS] he was elected
a member of the Academy of Sciences, in the place of Michel Chasles. Jordan is one of the most noted of French mathematicians, and has gained a wide reputation on account of his dis coveries in geometry and analysis. Ile has ap plied himself especially to the theory of sub stitutions, and has made important applications of this theory to algebraic and linear differential equations. He is recognized in France as one of the greatest teachers of the n-dimensional geom etry. The results of his investigations have ap peared in the form of memoirs to the number of more than a hundred, published chiefly in the Journal fur Mathematik Annali di Matcmatiea; Liourilles Journal: Mathematische Annalen Comptes Rendus; and the Journal de l'Ecole Polytechniquc. Besides these contributions he has published two works: Thi'oric des substitu tions et des equations algebriques (1870); Sours .d'analyse de l'Ecole Polytechnique (3 vols., 1882 S7 ; 2d ed. 1893-95).