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Theorem sum-rec
⊦ Σ(n + 1, nf) = nf(n) + Σ(n, nf)
Type: An axiom
Validity: The proof is valid.
Features: simp, localsimp,
Comment:
Used by:
dist
,
sum-empty
,
sum-split
,
sum-swap
,
Used by units in proved state:
multiply
,
Proof exists?: No