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He was born in Chalandri, in Athens.
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He joined the student branch of the National Liberation Front (EAM).
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He was awarded a Ph.D (Doctor of Philosophy).
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Princeton University
He was invited at the Princeton University mathematics department because of his proof of Dehn's lemma. -
Request for his extradition
The Greek authorities requested his extradition from the USA, because he sympathized with leftist politics, but Princeton Institute of Advanced Study gave him protection. -
Award
In honor of his work, he was awarded the first Oswald Veblen Prize in Geometry. -
He died in Princeton, New Jersey, USA.