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Theorem sub-01

i ≤ j, j ≤ 0 ⊦ i→n(i - j) = i→n(i) - i→n(j)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 2
Proof steps: 6
Used lemmas: abs-neg, add,
Used spec theorems:
- Used simplifier rules: