The Last Mystery of Edgar Allan Poe: The Troy Dossier true to the character and known history of Poe. The plot concerns an attempt to overthrow the United States government. The novel is one of the earliest to engage the historical Edgar Allan Poe as a protagonist in a detective novel. Poe is considered to be the inventor of the classic tropes of detective fiction with his character C. Auguste Dupin, so it is natural that writers would utilize him in their fictions, especially given the recent rise of the historical novel. Many other writers have done this, including Louis Bayard in "The Pale Blue Eye" and true crime writer
Dupin cyclide that the class of Dupin cyclides is invariant under Möbius (or conformal) transformations. In complex space formula_2 these three latter varieties can be mapped to one another by inversion, so Dupin cyclides can be defined as inversions of the torus (or the cylinder, or the double cone). Since a standard torus is the orbit of a point under a two dimensional abelian subgroup of the Möbius group, it follows that the cyclides also are, and this provides a second way to define them. A third property which characterizes Dupin cyclides is that their curvature lines are all circles (possibly through