Person: Jensen, Johan Ludwig
Johan Ludwig Jensen was a Danish mathematician and engineer who worked on the Riemann hypothsis and convex functions.
Mathematical Profile (Excerpt):
- Jensen was essentially self taught in research level mathematics and never held an academic appointment.
- The Company thrived, at least in part through the high level of technical skill that Jensen possessed.
- For his whole working life Jensen was an amateur mathematician only doing mathematics in his spare time.
- Jensen contributed to the Riemann Hypothesis, proving a theorem which he sent to Mittag-Leffler who published it in 1899.
- The theorem is important, but does not lead to a solution of the Riemann Hypothesis as Jensen had hoped.
- In a paper which he published in Acta mathematica in 1906, Jensen proved an inequality for convex functions which had a whole host of classical inequalities as special cases.
Born 8 May 1859, Nakskov, Denmark. Died 5 March 1925, Copenhagen, Denmark.
View full biography at MacTutor
Tags relevant for this person:
Origin Denmark, Number Theory
Thank you to the contributors under CC BY-SA 4.0! 
- Github:
-
- non-Github:
- @J-J-O'Connor
- @E-F-Robertson
References
Adapted from other CC BY-SA 4.0 Sources:
- O’Connor, John J; Robertson, Edmund F: MacTutor History of Mathematics Archive
