pub fn backward_link(th: Arc<UstrDiscreteTabTheory>) -> UstrDiscreteTabModelExpand description
The “walking” backward link.
The free category with links having a link from the codomain of a morphism back to the morphism itself.
In the system dynamics jargon, a backward link defines a “reinforcing loop,” assuming the link has a positive effect on the flow. An example is an infection flow in a model of an infectious disease, where increasing the number of infectives increases the rate of infection of the remaining susceptibles (other things equal).