Sherlock Holmes in the Great Murder Mystery Sherlock Holmes in the Great Murder Mystery Sherlock Holmes in the Great Murder Mystery is a 1908 American silent film directed by an unknown director. The film was released on 27 November 1908 and is an adaptation of Edgar Allan Poe's short story "The Murders in the Rue Morgue" (1841), which is considered the first detective story, though the plot was altered to include Arthur Conan Doyle's detective Sherlock Holmes instead of Poe's C. Auguste Dupin. Dr. Watson makes his film debut here, though the actors playing Holmes and Watson are unknown, as the rest of the cast. It is
Dupin cyclide of Dupin cyclides is invariant under the larger group of all Lie sphere transformations; any two Dupin cyclides are Lie-equivalent. They form (in some sense) the simplest class of Lie-invariant surfaces after the spheres, and are therefore particularly significant in Lie sphere geometry. The definition also means that a Dupin cyclide is the envelope of the one-parameter family of spheres tangent to three given mutually tangent spheres. It follows that it is tangent to infinitely many Soddy's hexlet configurations of spheres. A further special property of a cyclide is: An elliptic cyclide can be represented parametrically by the following formulas