A huge number of mathematical formulas on a gray background with a light centerA huge number of mathematical formulas on a gray background with a light center
The phrase start simple in the style of minimalismThe phrase start simple in the style of minimalism
The boards are laid out in a circle in the center of the inscriptionThe boards are laid out in a circle in the center of the inscription
То, что является источником дохода; деловое предприятие.