The present paper extends to higher degrees the well-known separation theorem decomposing a shift in the increasing convex order into a combination of a shift in the usual stochastic order followed by another shift in the convex order. An application in decision making under risk is provided to illustrate the interest of the result.
Denuit, M., Liu, L., & Meyer, J. (2014). A separation theorem for the weak s-convex orders. Insurance: Mathematics and Economics, 59, 279-284. https://doi.org/10.1016/j.insmatheco.2014.10.008 (Original work published 2014)