Ernst Leonard Lindelöf, (7 March1870–4 June1946), Finnishtopologist for whom Lindelöf space is named; son of Leonard Lorenz Lindelöf and brother of the philologist Uno Lorens Lindelöf. March 7 is the 66th day of the year in the Gregorian Calendar (67th in Leap years). ... 1870 was a common year starting on Saturday (see link for calendar). ... June 4 is the 155th day of the year in the Gregorian calendar (156th in leap years), with 210 days remaining. ... 1946 was a common year starting on Tuesday. ... The Republic of Finland (Finnish: Suomen tasavalta, Swedish: Republiken Finland) is a Nordic country in northeastern Europe, bordered by the Baltic Sea to the southwest, the Gulf of Finland to the southeast and the Gulf of Bothnia to the west. ... Topology (Greek topos = place and logos = word) is a branch of mathematics concerned with the study of topological spaces. ...
Lindelöf studied at the University of Helsinki where he completed his Ph.D. in 1893, became a docent in 1895 and professor of Mathematics in 1903. He was a member of the Finnish Society of Sciences and Letters. The University of Helsinki is a university located in Helsinki, Finland. ... Doctor of Philosophy (Ph. ... A docent (the word being derived from the Latin word docere, meaning to teach) is officially defined as a professor or university lecturer, but the term has been expanded to designate the corps of volunteer guides who staff many of the museums and other educational institutions in the United States. ...
In addition to working on mathematical topics as diverse as differential equations and the gamma function, Lindelöf actively promoted the study of the history of Finnish mathematics. In mathematics, a differential equation is an equation in which the derivatives of a function appear as variables. ... In mathematics, the gamma function is a function that extends the concept of factorial to the complex numbers. ...
Selected bibliography
Le calcul des résidus et ses applications à la théorie des fonctions (Paris, 1905)
Mémoire sur la théorie des fonctions entiéres d'ordre fini ("Acta societatis scientiarum fennicae" 31, 1903)
With Lars Edvard Phragmén: "Sur une extension d'un principe classique de l'analyse et sur quelques propriétés des fonctions monogènes dans le voisinage d'un point singulier", in: Acta mathematica 31, 1908.
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