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Theorem add-def-02

0 < j1, 0 < j2 ⊦ rational(i1, j1) + rational(i2, j2) = rational(i1 * j2 + j1 * i2, j1 * j2)

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment:
Used by: add-def-03,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 20
Proof steps: 31
Used lemmas: add-zero, add-comm, zero-def, zero-num, factor-rat-02, factor-rat-01, factor-rat-03, add-def-01,
Used spec theorems:
Used simplifier rules: