yep, Le vendredi 18 Juin 2004 14:07, Jean-Christophe Babinet a =E9crit : > Hello all of you ! > > NP can mean "No Princip" or "New Past" or "Not Payable" or "Natural > Potential"..... (my miserable english does not help for the exercise of > finding a name:() the actual mess in NP makes me think of 'Non Polynomial' :) cheers