Hyperplane (K-1 Simplex) which connects all pi=1p_i=1pi=1ΔK={p∈RK ∣ ∑i=1Kpi=1andpi≥0 for all i}.\Delta^K = \left\{ \mathbf{p} \in \mathbb{R}^{K} \,\Big|\, \sum_{i=1}^{K} p_i = 1 \quad \text{and} \quad p_i \ge 0 \text{ for all } i \right\}.ΔK={p∈RK∑i=1Kpi=1andpi≥0 for all i}.
