mb event system 5 Sections EventSystems Doc
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Def IdDeq == product-deq(Atom;;AtomDeq;NatDeq)

is mentioned by

Thm* x:Id, k:Knd, ds:x:Id fp-> Type, da:a:Knd fp-> Type,
Thm* f:(State(ds)ma-valtype(dak)ds(x)?Void).
Thm* ma-single-effect(dsdakxf MsgA
[ma-single-effect_wf]
Thm* ds,ds':ltg:Id fp-> Type. ds  ds'  State(ds' State(ds)[ma-state-subtype2]
Thm* ds,ds':ltg:Id fp-> Type. ds  ds'  (State(ds'r State(ds))[ma-state-subtype]
Def @i (with ds: ds init: init action a:T precondition a(v) is P s v)(j)
Def == if eqof(IdDeq)(j,i)
Def == if (with ds: ds
Def == if (init: init
Def == if action a:T
Def == if aprecondition a(v) is
Def == if aP)
Def == else  fi
[d-single-pre-init]
Def @i (with ds: ds action a:T precondition a(v) is P s v)(j)
Def == if eqof(IdDeq)(j,i) (with ds: ds action a:T precondition a(v) is P s v)
Def == else  fi
[d-single-pre]
Def d-single-sends(idsdaklf)(j)
Def == if eqof(IdDeq)(j,i) ma-single-sends(dsdaklf) else  fi
[d-single-sends]
Def d-single-effect(idsdakxf)(j)
Def == if eqof(IdDeq)(j,i) ma-single-effect(dsdakxf) else  fi
[d-single-effect]
Def @i: only L sends on (l with tg)(j)
Def == if eqof(IdDeq)(j,i) only L sends on (l with tg) else  fi
[d-single-sframe]
Def @i: only L affects x : t(j)
Def == if eqof(IdDeq)(j,i) only members of L affect x :t else  fi
[d-single-frame]
Def @ix:T initially x = v(j)
Def == if eqof(IdDeq)(j,i) x : T initially x = v else  fi
[d-single-init]

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mb event system 5 Sections EventSystems Doc