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Proof step 7 from proof valid-group-nodes-ls (previous step)

# gndx < (boolvar0 ⊃ # gndx + 1;valid-group-nodes(gndx)), n < (boolvar0 ⊃ # gndx + 1;valid-group-nodes(gndx)), # gndx < n, # gndx + 1 < valid-group-nodes(gndx), # gndx < valid-group-nodes(gndx), # gndx + 1 < (boolvar0 ⊃ # gndx + 1;valid-group-nodes(gndx)), ∀ n. n < valid-group-nodes(gndx) → n < # gndx ⊦

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 7 terms: # gndx

Additional information

Used simplifier rules: ⊦ ¬ n < n; (s) Used terms: # gndx