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Theorem numsub

⊦ (* i) + i0 - (* j) = (i - j) + i0

Type: A user defined theorem
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by: ler, mone-01, sub-add-04, sub-add-05, sub-add-08, sub-pred,
Used by units in proved state: int-mult, int-pot, int-div, intnat,
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: sub-add, sub-eq, sub-add-01,
Used spec theorems:
- Used simplifier rules: