Mystery film include "The Gold Bug" (1910), also from France, and "The Murders in the Rue Morgue" (1914). Both are derived from stories by Edgar Allan Poe, which is appropriate as Poe is often credited with creating modern detective fiction as well as the first private detective character, C. Auguste Dupin. Universal Pictures renamed him Pierre Dupin in "Murders in the Rue Morgue" (1932), an atmospheric horror-mystery starring Bela Lugosi. The film was remade twice more in 1953 and 1971. Poe's second Dupin story, "The Mystery of Marie Rogêt", was filmed in 1942. More recently, "The Raven" (2012) presented a fictionalized account
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