“…(2.11) If x ∈ O and δ x sbh(O) ω, then this measure ω is called a Jensen measure on O at x [15, 3], [43], [44], [12], [13], [51], [10], [20], [21], [24], [42], [7], [38]. The class of these measures is denoted by J x (O), and properties (2.11) are supplemented by the positivity property pt ω−δx ≥ 0 on R d ∞ \x for all measures ω ∈ J x (O) ⊂ AS x (O).…”