Short answers, pulled from the story.
Ken Keeler earned his PhD in applied mathematics at Harvard University in 1990. His doctoral thesis was titled Map Representations and Optimal Encoding for Image Segmentation.
Ken Keeler proved a theorem regarding body swapping mechanics that appeared directly within the plot of The Prisoner of Benda. This achievement stands as one of the few instances where a real-world mathematician contributed actual research to a television script.
Ken Keeler wrote episodes for Wings, The Simpsons, Futurama, The Critic, and The PJs. He also wrote direct-to-DVD movies titled Bender's Big Score and Into the Wild Green Yonder.
Ken Keeler served as co-executive producer during the first three years of Futurama production before taking on the title of executive producer in its fourth year. Fourteen episodes bear his name among the original series run.