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Proof step 10 from proof good-field-subset (previous step)

is_fskey(sk), st ⊆ st0, r -- sk ∈ st, r ∈ st ⊦ goodfieldandtype(r, sk, st0) ↔ r -- sk ∈ st ∧ okval(st[r -- sk], sk .fs .type)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
⊦ is_fskey(sk) → (goodfieldandtype(r, sk, st) ↔ r -- sk ∈ st ∧ okval(st[r -- sk], sk .fs .type))
Proof step 9:
is_fskey(sk), st ⊆ st0, r -- sk ∈ st, r ∈ st ⊦ r -- sk ∈ st0 ∧ okval(st0[r -- sk], sk .fs .type) ↔ okval(st[r -- sk], sk .fs .type)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]