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Theorem l-03

⊦ m < m0 ∧ n < n0 → (¬ m + n < m0 + n0 ↔ false)

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: even-02, even-05, less, less-03, pls,
Used by units in proved state: nat,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 4
Used lemmas: c, a, l,
Used spec theorems:
- nat-basic1/trans-1
Used simplifier rules:
- nat-basic1/f