Figure 2
From: Algorithms for detecting and analysing autocatalytic sets
A pseudo-RAF set. A simple example of a pseudo-RAF (pRAF) with food set F={f 1,f 2,f 3}. This pRAF fails to be an RAF since it is not F-generated (since the production of any molecule p 1,p 2,p 3 requires both a food molecule as well as another p i -molecule, so this system cannot ‘get started’ just from F).