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Proof step 5 from proof add-update-same (previous step)

∀ r, st, class. update(r, fis0, st[r -- _type, typeval(mkclasstype(class))]) = addobj(r, class, fis0, st) ⊦ (update(r, fis0, st[r -- _type, typeval(mkclasstype(class))])[r -- sk, val]) = (addobj(r, class, fis0, st)[r -- sk, val])

User applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 1, [extquanttermlist: (r, st, class) abort:F , discard:F , computed:F ]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (r, st, class)]]