I te tau 1948, i karangatia ia e Ralph Fox kia haere mai hei manuhiri ki te tari pāngarau o Princeton.
Ko te tikanga, ko te putanga matatini ake o te rerenga ko "I te 1948, i karangatia ia e Ralph Fox kia haere mai hei manuhiri ki te tari pāngarau o Princeton na te mea i miharo a Fox ki tetahi reta mai i a Papakyriakopoulos e kii ana ki te whakamatau i te lemma a Dehn. "