"book-pflow-xyz/chapters/appendix-d-glossary.md" . . "A rate law from chemistry where the rate of a reaction is proportional to the product of reactant concentrations. As go-pflow implements it, the continuous firing rate of transition $t$ is $r_t \\prod_{p \\in \\text{inputs}(t)} m(p)$, where $r_t$ is the rate constant: first order in every input place, whatever the arc weight. The weight $w(p,t)$ enters only the stoichiometry, so place $p$ drains at $w(p,t)$ times the flux ([`solver/ode.go`](https://github.com/pflow-xyz/go-pflow/blob/main/solver/ode.go); Chapter 3)."@en . . "Mass-action kinetics"@en . "3"^^ .