Phase Transition (4)=(A-1)a-) 入 6 (△-2)A 5 non-uniqueness regime 3 uniqueness regime 2 4 10 △Phase Transition 2 4 6 8 10 1 2 3 4 5 6 Δ λ non-uniqueness regime uniqueness regime ￾c(￾) = (￾ ￾ 1)(￾￾1) (￾ ￾ 2)￾