The active-or-idle scheduled successor #
At a scheduled transition the named target point is either already hit, in which case the transition is idle, or it is added by the protected one-point extension.
noncomputable def
ScottishBook155.scheduledSuccessor
(S : ProtectedStage (1 / 2))
(y : S.target.carrier)
:
The canonical successor transition which ensures that y is hit.
Equations
- One or more equations did not get rendered due to their size.
Instances For
theorem
ScottishBook155.scheduledSuccessor_hits
(S : ProtectedStage (1 / 2))
(y : S.target.carrier)
:
∃ (x : (scheduledSuccessor S y).next.source.carrier),
(scheduledSuccessor S y).next.map x = (scheduledSuccessor S y).targetEmbedding y
theorem
ScottishBook155.scheduledSuccessor_source_mk_le
(S : ProtectedStage (1 / 2))
(y : S.target.carrier)
(hM : Cardinal.mk S.source.carrier ≤ stageCardinal)
:
theorem
ScottishBook155.scheduledSuccessor_target_mk_le
(S : ProtectedStage (1 / 2))
(y : S.target.carrier)
(hM : Cardinal.mk S.source.carrier ≤ stageCardinal)
(hN : Cardinal.mk S.target.carrier ≤ stageCardinal)
: