PN: Formalism Presentation
Petri Nets: Formal Presentation
Quasi-Liveness and Liveness
A transition Ti is quasi-live for an initial marking M0
iff it exists a reachable marking Mk such as Ti is enabled.
A Petri Net is quasi- live for M0 if all its transitions
In other words,A transition t is quasi- live for M0 if there is
a firing sequence from M0 that contains t .