Boundary-value problems for differential equations unsolvable with respect to the higher time derivative

• Date: 1995
• Main Authors: Komarnyts'ka, L. I., Ptashnik, B. I., Комарницька, Л. І., Пташник, Б. Й.
• Format: Article
• Language: Ukrainian; English
• Published: Institute of Mathematics, NAS of Ukraine 1995
• Online Access: https://umj.imath.kiev.ua/index.php/umj/article/view/5519
• Journal Title: Ukrains’kyi Matematychnyi Zhurnal

For differential equations with constant coefficients unsolvable with respect to the higher time derivative, we establish conditions of the existence and uniqueness of solutions of problems with conditions local in time and periodic in space variables. We prove a metric theorem on lower bounds of sm...