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Proof step 6 from proof validFields-del (previous step)

∀ r, st, rk. validFields(r, fis0, st -- rk) → validFields(r, fis0, st), validFields(r, fv + fis0, st -- rk) ⊦ validFields(r, fv + fis0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 5:
validFields(r, fv ' + fis0, st -- rk), ∀ r, st, rk. validFields(r, fis0, st -- rk) → validFields(r, fis0, st) ⊦ validFields(r, fv ' + fis0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ fv + fis = fv ' + fis])]]