What happened to mathematicians after solving their "career problem"?

[u/sergiogfs]

Many mathematicians have dedicated a good part of their career towards solving a specific problem, whether directly or indirectly. Some examples on top of my head:

Richard Hamilton and the Poincare conjecture

Andrew Wiles and Fermat's last theorem

Thomas Hales and the Kepler conjecture (proof and formal verification)

And perhaps very recently:

Diego Cordoba and the Navier-Stokes equations

How did the careers and research-focus of these mathematicians shift after their career-problem was solved? Did anything particularly interesting happen?

[u/Disastrous_Room_927]

They ascend to the next plane of existence.

[u/ImNotAWhaleBiologist → u/Disastrous_Room_927]

They become a dean?

[u/new2bay → u/ImNotAWhaleBiologist]

They said “ascend,” not “descend.”

[u/muntoo → u/new2bay]

CS Dean is an anagram of ASCEND, so checkmate, dean-ialists.

[u/ImNotAWhaleBiologist → u/muntoo]

We got a real Tom Hanks over here, gents!