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Theorem range-recend

⊦ m to n = (m < n ⊃ (m < n ⊃ (m to n - 1) ++ (n - 1);∅);∅)

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

View the proof

Infos about the proof

Proved?: Yes
Interactions: 4
Proof steps: 10
Used lemmas: range-def,
Used spec theorems:
- set-basic/Extension
Used simplifier rules: