Abstract. Let E be a Banach space ordered by a solid and normal cone. We introduce a polynorm with respect to a given selection of positive pairwise disjoint vectors Pi,---iPm, and derive monotonicity properties of solutions of second order differential inequalities under one-sided matrix Lipschitz conditions.
IntroductionLet £ be a real Banach space, ordered by a cone K, that is K is a closed convex subset of E with \K C K (A > 0) and K D (-K) = {0}, and x < y :y -x € K. We will always assume that K is solid (that is Int K 0) and normal, and we write x y if y -x G Int K. Since K is solid, the set K* = {tp € E* : 0(x> 0)} is a cone, the dual cone, in the space of all continuous linear functionals E*.Throughout the paper let m > 2 and let pi,... ,p m G K \ {0} have the following properties:(1) p : = pi + h Pro £ Int K;(2) ini{pi,pj} = 0 (i^j).