An Analog of the Jackson Inequality for Coconvex Approximation of Periodic Functions

• Дата: 2001
• Автори: Popov, P. A., Попов, П. О.
• Формат: Стаття
• Мова: Українська; Англійська
• Опубліковано: Institute of Mathematics, NAS of Ukraine 2001
• Онлайн доступ: https://umj.imath.kiev.ua/index.php/umj/article/view/4313
• Назва журналу: Ukrains’kyi Matematychnyi Zhurnal

We prove an analog of the Jackson inequality for a coconvex approximation of continuous periodic functions with the second modulus of continuity and a constant that depends on the location of the points at which a function changes its convexity.