Fictional detectives Fictional detectives Fictional detectives are characters in detective fiction. These characters have long been a staple of detective mystery crime fiction, particularly in detective novels and short stories. Much of early detective fiction was written during the "Golden Age of Detective Fiction" (1920s-1930s). These detectives include amateurs, private investigators and professional policemen. They are often popularized as individual characters rather than parts of the fictional work in which they appear. Stories involving individual detectives are well-suited to dramatic presentation, resulting in many popular theatre, television, and movie characters. The first famous detective in fiction was Edgar Allan Poe's C. Auguste
Dupin cyclide "R" are a 3-dimensional vectors, and "A" and "B" are constants. Families of cyclides give rise to various cyclidic coordinate geometries. In Maxime Bôcher's 1891 dissertation, "Ueber die Reihenentwickelungen der Potentialtheorie", it was shown that the Laplace equation in three variables can be solved using separation of variables in 17 conformally distinct quadric and cyclidic coordinate geometries. Many other cyclidic geometries can be obtained by studying R-separation of variables for the Laplace equation. Dupin cyclide In mathematics, a Dupin cyclide or cyclide of Dupin is any geometric inversion of a standard torus, cylinder or double cone. In particular, these latter