C. Auguste Dupin Montfaucon" by (2004), a collection of thirteen detective stories set in the 19th century, the last of which (« Le drame de Reichenbach ») also provides a link with Sherlock Holmes. Other appearances: Jorge Luis Borges pays homage to Poe's Dupin in "Death and the Compass", by calling his main detective character Erik Lönrott an "Auguste Dupin"-type detective. This is one of the stories published by Borges in his "Ficciones"(1944). Borges also translated Poe's works into Spanish. In "The Paralogs of Phileas Fogg", author James Downard has Dupin help Fogg and his cohorts resolve some issues during the American leg
Dupin cyclide 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 are themselves examples of Dupin cyclides. They were discovered by (and named after) Charles Dupin in his 1803 dissertation under Gaspard Monge. The key property of a Dupin cyclide is that it is a channel surface (envelope of a one-parameter family of spheres) in two different ways. This property means that Dupin cyclides are natural objects in Lie sphere geometry. Dupin cyclides are often simply known as "cyclides", but the latter term is