And after the war, I saw an uncle again. My uncle was a very prominent mathematician, and he told me, "Look, there's a problem which I could not solve 25 years ago, and which nobody can solve.
Y después de la guerra me reencontré con un tío mío que era un prominente matemático, y él me dijo: -Mira, hay un problema que yo no pude resolver hace 25 años y que nadie puede resolver.