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Theorem write-new-app-nodups

# ax0 = # ndx0 ⊦ ¬ dups(ax0) ∧ ¬ dups(ax1) ∧ new(ax1, fs0[ax0, ndx0]) → ¬ dups(ax0 + ax1)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: nodups-new,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 6
Used lemmas: in-write, new-ext,
Used spec theorems:
- list-dup/address-list-set/dups-appex
Used simplifier rules: