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Theorem ocs-same-length-mklist

⊦ #oc(a, x) = # x ↔ x = mklist(a, # x)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: ocs-same-length-all,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 5
Proof steps: 12
Used lemmas: ocs-not-more, one-01, one, ocappend, oc-e,
Used spec theorems:
- list-last/mk-rec
- list/c-06
Used simplifier rules: