University of Paris people

Charles Henry (1859–1926) was a French librarian and editor. He was born at Bollwiller, Haut-Rhin, and was educated in Paris, where in 1881 he became assistant and afterward librarian in the Sorbonne. As a specialist in the history of mathematics, he was sent to Italy to seek some manuscripts of that nature which the government wished to publish. He edited several works upon kindred subjects, as well as memoirs, letters, and other volumes, and wrote critiques upon the musical theories of Rameau and Wronski. He is also credited with the invention of several ingenious devices and instruments used in psychophysiological laboratories. He published C. Huet's correspondence under the title Un érudit, homme du monde, homme d'église, homme de cour (1880), and he issued also Problèmes de géométrie pratique (1884) and Lettres inédites de Mlle. de Lespinasse à Condorcet et à D'Alembert (1887).Charles Henry, a mathematician, inventor, esthetician, and intimate friend of the Symbolist and anarchist writers Félix Fénéon and Gustave Kahn, met Georges Seurat, Paul Signac and Camille Pissarro during the last Impressionist exhibition in 1886. Henry would take the final step in bringing emotional associational theory into the world of artistic sensation: something that would influence greatly the Neo-Impressionists. Henry and Seurat were in agreement that the basic elements of art—the line, particle of color, like words—could be treated autonomously, each possessing an abstract value independent of one another, if so chose the artist. In 1889 Fénéon noted that Seurat knew that the line, independent of its topographical role, possesses an assessable abstract value, in addition, to the individual pieces of color, and the relation of both to the observer's emotion.
The Neo-Impressionists established what was accepted as an objective scientific basis for their painting in the domain of color. The underlying theory behind Neo-Impressionism would have a lasting effect on the works produced in the coming years by the likes of Robert Delaunay. The Cubists were to do so in both form and dynamics, and the Orphists would do so with color too. The decomposition of spectral light expressed in Neo-Impressionist color theory of Paul Signac and Charles Henry played an important role in the formulation of Orphism. Robert Delaunay, Albert Gleizes, and Gino Severini all knew Henry personally.

Jean Maitron (17 December 1910 – 16 November 1987) was a French historian specialist of the labour movement. A pioneer of such historical studies in France, he introduced it to University and gave it its archives base, by creating in 1949 the Centre d'histoire du syndicalisme (Historic Center of Trade-Unions) in the Sorbonne, which received important archives from activists such as Paul Delesalle, Émile Armand, Pierre Monatte, and others. He was the Center's secretary until 1969.
Maitron, however, is best known for his Dictionnaire biographique du mouvement ouvrier français (DBMOF or, more currently, Le Maitron), a comprehensive biographical dictionary of figures from the French workers' movement which was continued after his death, as well as a study of anarchism, History of anarchism in France (first ed. 1951), which has become a classic. Starting with the 1789 French Revolution, it includes 103,000 entries gathered by 455 different authors working under Maitron's direction. The Maitron has now extended itself with international versions, treating Austria (1971), United Kingdom (1979 and 1986), Japan (1979), Germany (1990), China (1985), Morocco (1998), United States from 1848 to 1922 (2002), a transnational one about the Komintern (2001) and the most recently published about Algeria (2006), almost all published at the Éditions de l'Atelier.Jean Maitron also founded and directed two reviews, L'Actualité de l'Histoire and then Le Mouvement social, which were directed after his death by Madeleine Rebérioux (1920–2005) then Patrick Fridenson (currently director of studies at the EHESS).