The Mystery of Marie Rogêt The Mystery of Marie Rogêt "The Mystery of Marie Rogêt", often subtitled A Sequel to "The Murders in the Rue Morgue", is a short story by Edgar Allan Poe written in 1842. This is the first murder mystery based on the details of a real crime. It first appeared in "Snowden's Ladies' Companion" in three installments, November and December 1842 and February 1843. Poe referred to it as one of his "tales of ratiocination". Poe's detective character C. Auguste Dupin and his assistant, the unnamed narrator, undertake the unsolved murder of Marie Rogêt in Paris. The body of Rogêt, a
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