Mats Ehrnstrom

Professor Department of Mathematical Sciences

+47 73591744
Alfred Getz vei 1, Sentralbygg II * 1146

Background and activities

Nonlinear partial differential equations

Elliptic equations; primarily stationary free-boundary flows. I have also done some work on ordinary differential, integro-differential and difference equations.

Fluid mechanics

Of particular interest are travelling water waves, free-surface flows and rotational currents. Current foci are waves with critical layers, multimodal waves and Whitham-like equations.

Current research group

Gabriele Brüll (Postdoc), Yuexun Wang (Postdoc); Long Pei (PhD), Mathias Nikolai Arnesen (PhD), Kristoffer Varholm (PhD), Filippo Remonato (PhD), Fredrik Hildrum (PhD).

Current projects and programmes

CV available for download above.

Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database

Journal publications

Others

  • Ehrnstrom, Mats. (2016) A presentation of the mathematical theory for the highest wave of the Whitham equation in connection to the awarding of the Wallenberg prize 2016. Svenska Matematikersamfundets årsmöte ; 2016-06-17.
  • Ehrnstrom, Mats. (2016) On Whitham's conjecture of a highest cusped wave for a nonlocal shallow water wave equation. Oberseminar Analysis und Physik ; Leibniz Universität Hannover. 2016-02-01.
  • Ehrnstrom, Mats. (2016) On waves of greatest height in fully dispersive nonlocal wave equations. Workshop on Interactions between Partial Differential Equations and Functional Inequalities (Institut Mittag-Leffler) ; Stockholm. 2016-09-12 - 2016-09-16.
  • Ehrnstrom, Mats. (2016) On waves of greatest height in fully dispersive nonlocal wave equations. Workshop ”Recent progress on the qualitative properties of nonlinear dispersive equations and systems” (Wolfgang Pauli Institute) ; 2016-09-19 - 2016-09-23.
  • Ehrnstrom, Mats. (2016) Symmetry and decay properties of traveling wave solutions to the Whitham equation. Differential Equations Seminar ; University of Missouri. 2016-12-03.
  • Ehrnstrom, Mats. (2015) Multi-dimensional bifurcation of steady water waves with vorticity. SIAM Conference on Analysis of Partial Differential Equations ; 2015-12-06 - 2016-12-10.
  • Ehrnstrom, Mats. (2015) On Whitham's conjecture of a highest cusped wave for a nonlocal shallow water wave equation. Online seminar on Applied Partial Differential Equations (University of Washington) ; 2015-10-15.