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Theorem keys-append

⊦ keys(fs, ax0 + ax1) = keys(fs, ax0) + keys(fs, ax1)

Type: A user defined theorem
Validity: The proof is valid.
Features: s, ls,
Comment:
Used by: keys-firstn, keys-in-elim-last-oc,
Used by units in proved state: gjournal-abs,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 3
Used lemmas: keys-rec, keys-base,
Used spec theorems:
- Used simplifier rules:
  - list/address-list-set/Nil
  - list/key-list-set/Nil
  - list/key-list-set/app-08
  - list/key-list-set/a
  - list/key-list-set/c
  - list/address-list-set/a
  - list/address-list-set/c