20 citations · 39 across the 4 of their papers we have counts for
4 papers
Absolutely continuous copulas obtained by regularization of the Frechét--Hoeffding bounds
Oscar Björnham, Niklas Brännström, Leif Persson
We show that the lower and upper Frechét-Hoeffding copulas, which are singular, can be regularized to absolutely continuous copulas. The method, which is constructive and explicit,…
Who farted? Hydrogen sulphide transport from Bardarbunga to Scandinavia
Håkan Grahn, Pontus von Schoenberg, Niklas Brännström
On September 9 2014 several incidences of foul smell (rotten eggs) were reported on the coast of Norway (in particular in the vicinity of Molde) and then on September 10 in the int…
Asymptotic series for the splitting of separatrices near a Hamiltonian bifurcation
Vassili Gelfreich, Niklas Brannstrom
This is a proof of an asymptotic formula which describes exponentially small splitting of separatrices in a generic analytic family of area-preserving maps near a Hamiltonian saddl…
Drift of slow variables in slow-fast Hamiltonian systems
N. Brännström, V. Gelfreich
We study the drift of slow variables in a slow-fast Hamiltonian system with several fast and slow degrees of freedom. For any periodic trajectory of the fast subsystem with the fro…