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Proof step 27 from proof addobj-delsw (previous step)

⊦ r = r0, (rk ∈ addobj(r0, class, fis, st) -- r ↔ rk ∈ addobj(r0, class, fis, st -- r)) ∧ (addobj(r0, class, fis, st) -- r)[rk] = (addobj(r0, class, fis, st -- r)[rk])

User applied rule structural induction

And obtained the following new goals

Proof step 26:
⊦ r = r0, (r1 -- sk ∈ addobj(r0, class, fis, st) -- r ↔ r1 -- sk ∈ addobj(r0, class, fis, st -- r)) ∧ (addobj(r0, class, fis, st) -- r)[r1 -- sk] = (addobj(r0, class, fis, st -- r)[r1 -- sk])

Rule argument

[VARWITHVARSEQSARG : rk, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : refkey generated by --;])]]