Сегодня родился Делоне Борис Николаевич
On March 15, 1890 in St. Petersburg Delaunay Boris Nikolaevich was born. This is a Russian and Soviet mathematician. He was also a founder of the Soviet mountaineering, the Master of Sports of the USSR in mountaineering and the author of the book "Tops of Western Caucasus". In his honor peak Delon and the pass Delon on Katun Range of Mountain Altai are called.