Journal
Between 22-24 April 2009 I visit the group of Carles Simò in Barcelona. I will give a presentation in the UB-UPC DSG Seminar on «The hydrogen atom in electric and magnetic fields».
The paper with Olga Lukina and Dmitrií Sadovskií on «Complete classification of qualitatively different perturbations of the hydrogen atom in weak near orthogonal electric and magnetic fields» has been accepted for publication in Journal of Physics A.
At RuG we have access to several academic journals. From inside the university network this access is transparent. When outside I must first authenticate through a proxy server. The latter is sometimes inconvenient. For example if I’m at home and find a paper through Google, then in order to access the PDF I should go to the RuG journals list and search again. Although this doesn’t take long it is somewhat inconvenient.
The paper with Olga Lukina and Dmitrií Sadovskií on «Most typical 1:2 resonant perturbation of the hydrogen atom by weak electric and magnetic fields» has been accepted for publication in Physical Review Letters.
On September 25 we are organizing an one-day conference on the occasion of the thesis defense of Olga Lukina. Olga has completed her thesis on «Geometry of torus bundles in integrable Hamiltonian systems».
On August 26 I presented the work with Dmitrií Sadovskií and Olga Lukina on the hydrogen atom in electric and magnetic fields during the Hamiltonian systems session of the Dynamics Days Europe 2008 conference that took place in TU Delft. The Hamiltonian systems session was organized by Henk Broer.

Last week I presented the work with Henk Broer and Easwar Subramanian on pulse coupled oscillator networks during the mini-symposium «Coupled Cell Networks» in the 5th European Congress of Mathematics . The mini-symposium was organized by Peter Ashwin, Ana Dias, and Jeroen Lamb.
The paper with Henk Broer and Easwar Subramanian on «Heteroclinic cycles between unstable attractors» has been accepted for publication in Nonlinearity.

Between 25 and 28 November I will visit the Institut Carnot de Bourgogne at Dijon and I will give a seminar on «Standard and fractional monodromy in physical systems».
Update: The visit has been postponed to January.
The paper with Henk Broer and Easwar Subramanian on «Robustness of unstable attractors in arbitrarily sized pulse-coupled networks with delay» has been accepted for publication in Nonlinearity.
It has been a long time without any news. A small update:
IWI (the Department of Mathematics and Computer Science) has moved since September 1, 2007 to Bernoulliborg, our new building in the Zernike campus. You can find the new address at the homepage. If you are visiting from outside Groningen, take bus 11 or 15 from the train station and step off at Zernike. Bernoulliborg is the blue building in front of you.