QUE SIGNIFIE?

Euler commented "Mathematicians have tried in vain to this day to discover some order in the sequence of Avantage numbers, and we have reason to believe that it is a mystery into which the mind will never penetrate" (Havil 2003, p. 163). In a 1975 déchiffrage, D. Zagier commented "There are two facts embout the distribution of Gratification numb