Traian Lalescu
| Traian Lalescu | |
|---|---|
 |
|
| Born |
12 July 1882 Bucharest, Romania |
| Died | 15 June 1929 (aged 46) Bucharest, Romania |
| Residence | Romania |
| Nationality | Romanian |
| Fields | Mathematician |
| Institutions |
Polytechnic University of Timișoara University of Bucharest |
| Alma mater |
University of Bucharest University of Paris |
| Doctoral advisor | Émile Picard |
| Known for | Integral equations |
Traian Lalescu (Romanian: [traˈjan laˈlesku]; 12 July 1882 – 15 June 1929) was a Romanian mathematician. His main focus was on 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.
He went to the Carol I High School in Craiova, continuing high school in Roman, and graduating from the Boarding High School in Iași. After entering the University of Iași, he completed his undergraduate studies in 1903 at the University of Bucharest.
He earned his Ph.D. in Mathematics from the University of Paris in 1908. His dissertation, Sur les équations de Volterra, was written under the direction of Émile Picard. In 1911, he published Introduction to the Theory of Integral Equations, the first book ever on the subject of integral equations.
He was a professor at the University of Bucharest, the Polytechnic University of Timișoara (where he was the first rector, in 1920), and the Polytechnic University of Bucharest.
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