List of Famous people who died at 90

László Fejes Tóth was a Hungarian mathematician who specialized in geometry. He proved that a lattice pattern is the most efficient way to pack centrally symmetric convex sets on the Euclidean plane. He also investigated the sphere packing problem. He was the first to show, in 1953, that proof of the Kepler conjecture can be reduced to a finite case analysis and, later, that the problem might be solved using a computer.

José Bénazéraf was a French filmmaker and producer who specialised in erotic films.

Walter Joseph "Wally" Hickel was an American businessman, real estate developer, and politician. He worked as a construction worker and eventually became a construction company owner/operator during Alaska's territorial days. Following World War II, Hickel became heavily involved with real estate development, building residential subdivisions, shopping centers and hotels. Hickel entered politics in the 1950s during Alaska's battle for statehood and remained politically active for the rest of his life.