Not that it’s a big deal but Frances Fox Piven didn’t go to Columbia. She left Boston University to go to CUNY.
Obama alleges he went to Columbia - not that anyone ever remembers him there.
So Obama probably never studied with Piven.
Piven and her husband taught at Columbia (Economics>). Obama supposedly attended studying Poli Sci. I believe he actually studied with Cloward/Piven learning about their theory on how to transform the US into a Socialist country. That is the reason no Poli Sci. students remember Obama.
Years later both Obama and Piven were on the dais together teaching Alinsky’s “Rules for Radical’s.” Prof.s Cloward and Piven were also frequent guests at the Clinton White House.