Modèles mathématiques à l'IHP

Kummer quartic surface with eight real double points and eight imaginary double points. It was created by Karl Rohn, a German mathematician, in 1899. It has eight real double planes that meet the surface along eight conics marked on the model in plaster. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).

Smooth cubic surface, dating from 1920-1930 and moulded in a thermoplastic material using a plaster model, attributed to Christian Juel, a Danish mathematician. The surface is marked with 27 real lines in textile thread. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).

Wire surface based on a helix and created by Joseph Caron, professor of descriptive geometry at the École normale supérieure (ENS), on 16 November 1914. It is traced on a cylinder of radius r, rolled up in a coaxial cylinder of radius R > r. The surface contains three families of helices: those belonging to the cylinder of radius r are red, those belonging to the cylinder of radius R - r are blue, and those belonging to the cylinder of radius R are yellow. It forms part of a collection of…

Wire surface based on a helix and created by Joseph Caron, professor of descriptive geometry at the École normale supérieure (ENS), on 16 November 1914. It is traced on a cylinder of radius r, rolled up in a coaxial cylinder of radius R > r. The surface contains three families of helices: those belonging to the cylinder of radius r are red, those belonging to the cylinder of radius R - r are blue, and those belonging to the cylinder of radius R are yellow. It forms part of a collection of…

Wire model on a brass structure, representing a cubic cone of genus 1. This model was created by Hermann Wiener, professor of mathematics at the Karlsruhe Institute of Technology in Germany, in 1899. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).

Wooden model illustrating the evolution of a wavefront, created by Joseph Caron, professor of descriptive geometry at the École normale supérieure (ENS), in February 1914. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).

Cardboard model representing circles of curvature in a hyperbolic point, created by C. Tesch in 1894. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).

Cardboard model representing circles of curvature in a hyperbolic point, created by C. Tesch in 1894. It forms part of a collection of mathematical objects at the Institut Henri Poincaré (IHP).