In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

In later life this mythological figure left Argos and arrived after some journeys in southern Italy, where he supposedly founded several cities. The son of Tydeus and Deipyle, this man was one of the Epigoni before going to Troy, where he nearly killed Aeneas in combat, killed both Rhesus and Dolon, helped smuggle the Palladium out of Troy, and even managed to wound the god Ares in battle. Name this character of Greek myth who shares his name with a king of Thrace known, FTP, for his flesh-eating mares, to whom he fed the bodies of his houseguests until he himself was fed to them by Heracles.
Social Science

In the Corey-Bakshi-Shibata catalyst, an atom of it is attached to a pyrrole ring, an oxygen atom, and a toluene group. This element's acids are combined with amines and ketones in the Petasis reaction and in combining alkyl halides through the Suzuki coupling. Complexes containing it are called sido or arachno according to Wade's rules, and a more famous reaction using it is sometimes named for Herbert Brown. Mined from the ore Uletite, its silicate was once used in making hard glass for manufacturing laboratory equipment. For 10 points, name this element that participates in an anti-markonikov addition reaction to alkenes, with atomic number 5 and symbol B.
Science

Fermat's little theorem can be used to prove that this function of a prime minus one equals negative one modulo that prime according to Wilson's theorem. When this function's argument is downshifted by one, the gamma function results. The natural log of this function of n is equal to n log n minus n for very large n according to [*] Stirling's approximation. This function appears in the denominator of all the terms of the Taylor series, and it is used to calculate binomial coefficients with combinations. For 10 points, name this function of n equal to the product of all positive integers less than or equal to n, symbolized with an exclamation point.

Science