Laurie Anderson | Jack Kirby | Hugh Laurie | West Kirby | Edmund Kirby Smith | Piper Laurie | Kirby | Laurie Records | Laurie Foell | Laurie Daley | Luke Kirby (actor) | Luke Kirby | Laurie Patton | Laurie Beechman | Kirby Muxloe | Kirby Dick | Laurie Walters | Laurie Metcalf | Laurie Lee | Laurie Cumming | Kirby Bellars | David Kirby | Annie Laurie | Will Kirby | William T. Kirby | Steven Kirby | Robert Kirby | Rip Kirby | Michael Kirby (judge) | Michael Kirby |
Laurie Kirby and Jeff Paris gave an interpretation of the Goodstein's theorem as a hydra game: the "Hydra" is a rooted tree, and a move consists of cutting off one of its "heads" (a branch of the tree), to which the hydra responds by growing a finite number of new heads according to certain rules.