Convex & Concave
RBF Definitions
"Nature uses concave-convex for its step-up, step-down transformations."
- Citation & context at Step-up, Step-down Transformations, 23 Jun'75
Citations
- Step-up, Step-down Transformations, 23 Jun'75

RBF Definitions
"Nature uses concave-convex for its step-up, step-down transformations."
