The Poe Shadow October 8, 1849. He had previously corresponded with Poe about providing legal support for a new publication, "The Stylus". Clark feels obliged to look into the mysterious circumstances surrounding Poe's death, despite protests from his fiancée Hattie Blum and his friend Peter Stuart. Clark's journey takes him to Paris to seek out the real-life inspiration for Poe's character C. Auguste Dupin, a man of intellect who could help unravel the mystery. After eliminating several possibilities, he meets Baron C.A. Dupin, a famous lawyer, and a detective with a similar name, Auguste Duponte. After a confrontation with the Baron Dupin and
Dupin indicatrix Dupin indicatrix In differential geometry, the Dupin indicatrix is a method for characterising the local shape of a surface. Draw a plane parallel to the tangent plane and a small distance away from it. Consider the intersection of the surface with this plane. The shape of the intersection is related to the Gaussian curvature. The Dupin indicatrix is the result of the limiting process as the plane approaches the tangent plane. The indicatrix was invented by Charles Dupin. For elliptical points where the Gaussian curvature is positive the intersection will either be empty or form a closed curve. In the