The Big Bang Theory | Extreme Makeover: Home Edition | Extreme Championship Wrestling | Theory of a Deadman | World Extreme Cagefighting | music theory | probability theory | theory | Theory of relativity | theory of relativity | Social learning theory | Game Theory (band) | Game Theory | Conspiracy theory | Music theory | K-theory | Extreme | AP Music Theory | Piaget's theory of cognitive development | Extreme (band) | conspiracy theory | Theory of Relativity | Theory | Terror management theory | Invariant theory | information theory | graph theory | Galois theory | Extreme Makeover | Einstein–Cartan theory |
As a mathematician, Gumbel was instrumental in the development of extreme value theory, along with Leonard Tippett and Ronald Fisher.