On the Sign of Solutions of Systems of Ordinary Differential Equations

• Date: 2002
• Main Authors: Kalinowski, J., Каліновський, Й.
• Format: Article
• Language: English
• Published: Institute of Mathematics, NAS of Ukraine 2002
• Online Access: https://umj.imath.kiev.ua/index.php/umj/article/view/4166
• Journal Title: Ukrains’kyi Matematychnyi Zhurnal

We show that Theorems 1 and 3 in A. G. Gritsai's paper “Monotonicity properties of solutions of systems of nonlinear differential equations” published in the collection of works Approximate and Qualitative Methods in the Theory of Differential and Functional Differential-Equations (Institut...