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Theorem isempty-empbuf

⊦ isempty(buf) ↔ buf = mkempbuf(# buf)

Type: A user defined theorem
Validity: The proof is valid.
Features: s,
Comment:
Used by:
Used by units in proved state: encoding-page-size-nonempty, encoding-fixed-size-nonempty,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 6
Used lemmas: isempty-ext, isempty,
Used spec theorems:
- array/buffer/Extension
Used simplifier rules:
- nat/le-def
- nat-basic/ref
- nat/ler
- nat-basic/c
- nat-basic/a
- nat-basic/add-base
- nat/lez
- nat-basic/f
- array-splice/buffer/emparray-at
- array-splice/buffer/emparray-len