Bendixson
# Ivar Otto Bendixson

### Born: 1 Aug 1861
in Bergshyddan, Djurgardsbrunn, Sweden

Died: 1935

**Ivar Bendixson** taught at Stockholm, then from 1913 to 1927 he was rector of Stockholm University. He worked on set theory and differential equations.
A frequent contributor to Acta Mathematica , the journal founded by his colleague Mittag-Leffler, Bendixson is best remembered for the Poincaré-Bendixson theorem. The theorem, which says an integral curve which does not end in a singular point has a limit cycle, was first proved by Poincaré but a more rigorous proof with weaker hypotheses was given by Bendixson in 1901.

**Reference (One book/article)**

JOC/EFR December 1996