## Helge Holden

**Helge Holden**(born 28 September 1956) is a Norwegian mathematician working in the field of differential equations and mathematical physics. He was Praeses of the Royal Norwegian Society of Sciences and Letters from 2014 to 2016.

He earned the dr.philos. degree at the University of Oslo in 1985. The title of his dissertation with Raphael HÃ¸egh-Krohn was ''Point Interactions and the Short-Range Expansion. A Solvable Model in Quantum Mechanics and Its Approximation''. He was appointed professor at the Norwegian Institute of Technology (now: the Norwegian University of Science and Technology ) in 1991. His research interests are Differential equations, mathematical physics (in particular hyperbolic conservation laws and completely integrable systems), Stochastic analysis, and flow in porous media.

In 2014 he became Chairman of the board of the Abel Prize fund.

He was elected Secretary General of the International Mathematical Union (IMU) for the period 2019â€“2022. Provided by Wikipedia

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