Coucher de soleil no. 1 sphere, also called Poincaré dodecahedral space, is a particular example of a homology sphere. Being a spherical 3-manifold, it is the only homology 3-sphere, besides the 3-sphere itself, with a finite fundamental group. While it is not known the extent to which such discoveries influenced Metzinger's representation of the radiating sun in "Coucher de soleil no. 1", his interest and prowess in mathematics is well documented. Coucher de soleil no. 1 Coucher de soleil no. 1 (also called Landscape, Paysage, Landschap, or Sunset No. 1) is an oil painting created circa 1906 by the French artist and theorist Jean Metzinger
Portes du Soleil Midi and the Dents Blanches, at the end of the Vallée d’Illiez. It is a 150 years old village which was among the initiating towns when the Portes du Soleil skiarea was established in the late Sixties. There are no pistes leading all the way down to Champery due in part to the fact that the mountainside above the town is heavily exposed to snow. The Champéry – Planachaux cable-car (125 passengers) and the 6-seater chairlift in Grand-Paradis are fast connections into the Portes du Soleil system. Portes du Soleil Les Portes du Soleil (literally "The Doors of the Sun")