Detective fiction the Detective. In short, it is difficult to establish who was the first to write the English-language detective novel, as various authors were exploring the theme simultaneously. In 1887, Arthur Conan Doyle created Sherlock Holmes, arguably the most famous of all fictional detectives. Although Sherlock Holmes is not the original fiction detective (he was influenced by Poe's Dupin and Gaboriau's Lecoq), his name has become a byword for the part. Conan Doyle stated that the character of Holmes was inspired by Dr. Joseph Bell, for whom Doyle had worked as a clerk at the Edinburgh Royal Infirmary. Like Holmes, Bell
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