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Theorem sub-def-01

⊦ 0 < j1 ∧ 0 < j2 → rational(i1, j1) - rational(i2, j2) = rational(i1, j1) + rational(~ i2, j2)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: denom-neg-02, elim-sub, ls-def, num-neg-03,
Used by units in proved state:
Proof exists?: Yes

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Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 5
Used lemmas: num-neg-01, denom-neg-01, add-def, sub-def,
Used spec theorems:
- Used simplifier rules: