Dear All. Just to avoid confusion: An IFISC seminar had originally been announced for next Wednesday, 16th March. However, at the request of the speaker, we had to postpone the talk (new date to be decided). The request came too late for us to fill the slot, so unless a volunteer comes forward in the next few days, there will be no seminar this week. Please accept our apologies. Tobias & Sandro Tobias Galla Instituto de Física Interdisciplinar y Sistemas Complejos (IFISC) tobias.galla@ifisc.uib-csic.es @tobiasgalla