Mathematician:Ernst Leonard Lindelöf

Mathematician
Finnish topologist who also worked on differential equations and the gamma function.

Wrote a series of highly-regarded textbooks and published extensively on the history of Finnish mathematics.

Nationality
Finnish

History

 * Born: 7 March 1870, Helsingfors, Russian Empire (now Helsinki, Finland)
 * Died: 4 June 1946, Helsinki, Finland

Theorems and Definitions

 * Lindelöf Space
 * Lindelöf Hypothesis
 * Lindelöf's Lemma
 * Lindelöf's Theorem
 * Phragmén-Lindelöf Principle (with )
 * Picard-Lindelöf Theorem (with ) (also known as Picard's Existence Theorem)

Publications

 * 1894: Sur l'application de la méthode des approximations successives aux équations différentielles ordinaires du premier ordre
 * 1905: Le calcul des résidus et ses applications à la théorie des fonctions
 * 1903: Mémoire sur la théorie des fonctions entiéres d'ordre fini
 * 1908: Sur une extension d'un principe classique de l'analyse et sur quelques propriétés des fonctions monogènes dans le voisinage d'un point singulier (with )
 * 1908: Quelques remarques sur la coissance de la function $\zeta \left({s}\right)$ (in which he stated what is now known as the Lindelöf Hypothesis)
 * 1920-1946: Differential and integral calculus and their applications (four volumes)
 * 1936: Introduction to function theory