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Theorem log2ub-log2

⊦ log2↑(n) = (n = 0 ⊃ 0;(∃ m. n = 2^ m ⊃ log2 n;log2 n + 1))

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment: shows that log2↑ can be alternatively defined in terms of the log2 function in the library
Used by: log2ub-zero,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 5
Used lemmas: log2up-def,
Used spec theorems:
- Used simplifier rules: