### 1.1.2 Stanislaw Ulam

Stanislaw Ulam is a famous mathematician who taught in the USA in the latter half of this century

We can use the term 'Ulam's Dilemma' for the situation which he has described vivdly in his autobiography, Adventures of a Mathematician

At a talk I gave at a celebration of the twentyfifth anniversary of the construction of von Neumanns computer at Princeton a few years ago, I suddenly started estimating silently in my mind, how many theorems are published in mathematical journals each year...

He thus set the following question to his students