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Proof step 5 from proof fwd-in-gstore0 (previous step)

n ∈ gstore, ∀ n. n ∈ dom gstore0 ∪ elems nx ↔ n ∈ dom gstore ∪ ginval ⊦ n ∈ gstore0, n ∈ nx

User applied rule all left

And obtained the following new goals

Proof step 6:
n ∈ dom gstore0 ∪ elems nx ↔ n ∈ dom gstore ∪ ginval, n ∈ gstore ⊦ n ∈ nx, n ∈ gstore0

Rule argument

pos: left 2 terms: n abort: F discard: T computed: T

Additional information

Used terms: n