Figure 2
The emergent RAF set. \(\mathcal {R}_{1}\) provides the food set F ′ (it is itself an RAF set for the original food set F and generates an extended food set F ′), and gives rise to (enables) \(\mathcal {R}_{2}\). \(\mathcal {R}_{2}\) then “catalyzes” its own production by forming a boundary within which the reactions in \(\mathcal {R}_{1}\) can happen at increased rates.