Motivation I remember one lecture about linear models in the University of Costa Rica. He said before to present some classic method “This only works if you have more data than variables”. In this moment, it seems very reasonable and I could not imagine any real case with more variables ($p$) than data ($n$).

###### Monthly Archives: September 2013

Let’s help them out to go to the competition The guys from the Mathematics Olympics Team are in a fundraiser. Now is to assist to the V Ibero-American Inter-universitary Math Competition (CIIM because of its initials in Spanish). The competition will be in Armenia, Colombia the 15th to the 20th October, 2013. If want …

The monthly section “Talento destacado del mes” from the TICOTAL network (Red de Talento Costarricense en el Extranjero, in Spanish) made me an interview about my experience as Ph.D student in France. I talked about the process at the University of Costa Rica (UCR) to get the international scholarship which is a strange story. Back …

The other day I was bounding some inequalities for my thesis. I had that some functions were Holder, but I haven’t the explicit derivatives of my functions. I spent one hour or so thinking if I could bound correctly my expression without having the derivatives. The answer is yes, and I will show how. Hölder …