Anthony MorseAnthony Perry Morse (1911–1984) was an American mathematician who worked in both analysis, especially measure theory, and in the foundations of mathematics. He is best known as the co-creator, together with John L. Kelley, of Morse–Kelley set theory. This theory first appeared in print in Kelley's ''General Topology''. Morse's own version appeared later in ''A Theory of Sets''.
He is also known for his work on the Morse–Sard theorem and the Federer–Morse theorem.
Anthony Morse should not be confused with Marston Morse, known for developing Morse Theory. Provided by Wikipedia