QUESTION: Fix punctuation: became friends with S T Yau whom I credit with generously establishing my finally and definitively as a mathematician
ANS: ... became friends with S T Yau , whom I credit with generously establishing my finally and definitively as a mathematician.

QUESTION: Fix punctuation: happening 2005 animals kobber bladguld 22 karat over 2 m for sale
ANS: happening, 2005, animals, kobber, bladguld 22 karat, over 2 m, for sale

QUESTION: Fix punctuation: He tended to lay the foundations for an area and then move on to the next as each successive one blossomed into a major research area in his wake
ANS: He tended to lay the foundations for an area and then move on to the next, as each successive one blossomed into a major research area in his wake.

QUESTION: Fix punctuation: Yet when this sin is indulged it is capable of leading to every other sin listed here I am not trying to be dramatic
ANS:
Yet when this sin is indulged, it is capable of leading to every other sin listed here. I am not trying to be dramatic.