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Proof step 2 from proof sortedchars-no-dups (previous step)

dups(s→l(sortedchars)) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ sortedchars = "!#$%&()*+-" + "./0123456789:<=>?@" + "ABCDEFGHIJKLM" + "NOPQRSTUVWXYZ" + "[]^_abcdefghi" + "jklmnopqrs" + "tuvwxyz|~"
Proof step 4:
dups(s→l("!#$%&()*+-" + "./0123456789:<=>?@" + "ABCDEFGHIJKLM" + "NOPQRSTUVWXYZ" + "[]^_abcdefghi" + "jklmnopqrs" + "tuvwxyz|~")) ⊦

Rule argument

spec: string-less inst: name: sortedchars-divided seq: ⊦ sortedchars = "!#$%&()*+-" + "./0123456789:<=>?@" + "ABCDEFGHIJKLM" + "NOPQRSTUVWXYZ" + "[]^_abcdefghi" + "jklmnopqrs" + "tuvwxyz|~" subst: flags: rewrite

Additional information

Used terms: