Figure 2From: Slow-fast dynamics of Hopfield spruce-budworm model with memory effects The structure of the slow manifold M of equation ( 2.6 ) with the projection on the \(\pmb{(X,Y)}\) plane, where \(\pmb{B_{1}}\) and \(\pmb{B_{2}}\) are the saddle-note bifurcation points. Back to article page