Traian Lalescu
Traian Lalescu | |
|---|---|
Émile Picard |
Traian Lalescu (Romanian: integral equations and he contributed to work in the areas of functional equations, trigonometric series, mathematical physics, geometry, mechanics, algebra, and the history of mathematics.
Life
He went to the
University of Iași, he completed his undergraduate studies in 1903 at the University of Bucharest
.
He earned his
Émile Picard. In 1911, he published Introduction to the Theory of Integral Equations, the first book ever on the subject of integral equations
.
After returning to Romania in 1909, he first taught Mathematics at the
School of Bridges and Highways, in the department of graphic statistics.[1]
He was a professor at the
Polytechnic University of Bucharest
.
The Lalescu sequence
![{\displaystyle L_{n}={\sqrt[{n+1}]{(n+1)!}}-{\sqrt[{n}]{n!}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/fc16d576ada83990416825937a75599939c24575)
Legacy
There are several institutions bearing his name, including Colegiul Naţional de Informatică Traian Lalescu in
Reşiţa
. There is also a Traian Lalescu Street in Timişoara.
The National Mathematics Contest Traian Lalescu for undergraduate students is also named after him.
A statue of Lalescu, carved in 1930 by Cornel Medrea, is situated in front of the Faculty of Mechanical Engineering, in Timişoara and another statue of Lalescu is situated inside the University of Bucharest.
Work
- T. Lalesco, Introduction à la théorie des équations intégrales. Avec une préface de É. Picard, Paris: A. Hermann et Fils, 1912. VII + 152 pp.[2] JFM entry
- Traian Lalescu, Introducere la teoria ecuaţiilor integrale, Editura Academiei Republicii Populare Romîne, 1956. 134 pp. (A reprint of the first edition [Bucharest, 1911], with a bibliography taken from the French translation [Paris, 1912]). MR0085450
References
- ^ Ion Văduva-Poenaru, Enciclopedia marilor personalități: G-O, p. 248. Bucharest: Editura Geneze, 1999, ISBN 978-97390-9929-5
- .
External links
- Traian Lalescu at the Mathematics Genealogy Project
- "Representative Figures of the Romanian Science and Technology"
- (in Romanian) "Traian Lalescu", from Colegiul Naţional de Informatică Traian Lalescu, Hunedoara
- (in Romanian) "Cine a fost Traian Lalescu?", from Liceul Teoretic Traian Lalescu, Reşiţa
- (in Romanian) "Monumentul lui Traian Lalescu (1930)"[permanent dead link], at infotim.ro
- A Class of Applications of AM-GM Inequality (From a 2004 Putnam Competition Problem to Lalescu’s Sequence) by Wladimir G. Boskoff and Bogdan Suceava, Australian Math. Society Gazette, 33 (2006), No.1, 51-56.
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