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Proof step 10 from proof delswr (conclusion)

r ∈ H ⊦ r ∈ rs → H[r, o] \ rs = H \ rs

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 9:
r ∈ H, r ∈ rs ⊦ rs = ∅, H[r, o] \ rs = H \ rs, # rs = 0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ rs ≠ ∅ → # rs ≠ 0], [CSIMPFORWARD : ⊦ r ∈ rs → rs ≠ ∅])]]