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At: switch main theorem 3 1

1. E: EventStruct
2. P: (|E| List)Prop
3. A: Type
4. evt: A|E|
5. tg: ALabel
6. tr_u: |E| List
7. tr_l: A List
8. switchable(E)(P)
9. No-dup-send(E)(tr_u)
10. tr_m: A List
11. tr_l R(tg) tr_m
12. map(evt;tr_m) layerR(E) tr_u
13. switch_inv( < A,evt,tg > (E))(tr_m)
14. m:Label. P(map(evt; < tr_l > _m))
15. P(map(evt;tr_m))

layerR(E) preserves P

By:
Unfold `layer_rel` 0
THEN
BackThru Thm* P:(TProp), R:(TTProp). R preserves P R^* preserves P
THEN
AllHyps (h.(Unfold `b_switchable` h) THEN (Reduce h))
THEN
Repeat (BackThru Thm* P:(TProp), R1,R2:(TTProp). R1 preserves P R2 preserves P R1 R2 preserves P)


Generated subgoals:

None


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listapplyfunctionuniversepropall

(8steps) PrintForm Definitions Lemmas mb hybrid Sections GenAutomata Doc