Soviet mathematicians B.N. Delone and I.R. Shafarevich (1947)

Types of winter forest near Moscow.

Mathematician Delone BN And his student Shafarevich IR. On a ski trip.

Shafarevich and Delone talk on the go.

Kind of winter forest.

Delaunay points out Shafarevich's direction with a ski pole.

The faces of Safarevic and Delaunay (large).

Shafarevich and Delaunay continue skiing, they leave the mountains in the forest.

Delone and Shafarevich in the study at the Delaunay country house discuss scientific problems, Shafarevich sits at the table opposite Delaunay.

Shafarevich with a book in his hands.

Delone and Shafarevich talk while sitting opposite each other.

Delone shows Shafarevich a sheet with calculations and formulas.

Shafarevich solves the problem, holding in his hand the mock-up of the polyhedron.

Sheets with calculations and drawings made by Shafarevich.

Texts of scientific articles Delone and Shafarevich, published in the collection "Reports of the Academy of Sciences of the USSR" for 1946.