TY - JOUR AU - Rolewicz, Stefan TI - How to define "convex functions" on differentiable manifolds JO - Discussiones Mathematicae. Differential Inclusions, Control and Optimization PY - 2009 SP - 7 EP - 17 VL - 29 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DMDICO_2009_29_1_a0/ LA - en ID - DMDICO_2009_29_1_a0 ER -