Abstraction in the form of waves, beautiful designAbstraction in the form of waves, beautiful design
Astral projection, a color wave on a celestial backgroundAstral projection, a color wave on a celestial background
Modern architecture of the shopping center in black and whiteModern architecture of the shopping center in black and white
В математике: всякая непрямая линия. Кривая линия, изображающая рост или падение чего-н. в развитии какого-н. процесса.