Relation of fixed points and parameters for the system in all regimes. The regime represented by III i) with parameters regions σ ∊ (σ1, σ2) and has two imaginary fixed points. The red curve denoted by II) with parameters satisfying σ = σ
and has two equivalent fixed points. The three cases of II) occur in the intervals. The regimes denoted by I) with parameters satisfying σ ∊ (σ2,σ5) and ; satisfying σ ∊ (σ2, σ5) and μ ∊ ((2N - 1)/4N(N - 1), 1); satisfying σ ∊ (σ 1,σ5) and μ ∊ (0,1/(2N - 1)); satisfying σ ∊ (σ 1,σ
) and have two real fixed points. The five cases of I) occur in the regions.