C. Auguste Dupin Dupin" is at the center of Matthew Pearl's novel "The Poe Shadow" (2006). Dupin makes an appearance, alongside Poe himself, in the novel "Edgar Allan Poe on Mars" (2007) by Jean-Marc Lofficier & Randy Lofficier. In "Murder in the Madhouse" (1935), the first of Jonathan Latimer's series of screwball crime novels starring detective William Crane, Crane presents himself in the sanitarium as C. Auguste Dupin. The story contains more oblique references in the form of stylistic elements (offstage murders, Crane's theories of deduction) that suggest Poe had an influence on Latimer's writing. Dupin is the hero of "Les ogres de
Dupin cyclide also used to refer to a more general class of quartic surfaces which are important in the theory of separation of variables for the Laplace equation in three dimensions. Dupin cyclides were investigated not only by Dupin, but also by A. Cayley und J.C. Maxwell. Today, Dupin cylides are used in computer-aided design (CAD), because cyclide patches have rational representations and are suitable for blending canal surfaces (cylinder, cones, tori, and others). There are several equivalent definitions of Dupin cyclides. In formula_1, they can be defined as the images under any inversion of tori, cylinders and double cones. This shows