Comparison Theorems for Functional Diffe
✍
Jozef Džurina
📂
Article
📅
1993
🏛
John Wiley and Sons
🌐
English
⚖ 374 KB
## Abstract Our aim in this paper is to obtain the comparison principles which extend those of Grace and LALLI. The equations. L~n~u(t)±f(t, u[g(t)]= 0 are compared with the equations. M~n~u(t)±z(t)h([τ(t)])= 0.