The texture of the ruby crimson color of the desktopThe texture of the ruby crimson color of the desktop
Abstraction knocked down green circles with an orange center on a blue backgroundAbstraction knocked down green circles with an orange center on a blue background
Abstraction in the form of waves, beautiful designAbstraction in the form of waves, beautiful design
В математике: всякая непрямая линия. Кривая линия, изображающая рост или падение чего-н. в развитии какого-н. процесса.