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Proof of `Depth and approximation loss of balanced recursion` (3rd statement)

groundedproofs/Lax263307Proofs/RecursionDepth.lean · lax-263307

What this proof establishes

no assumptions

Assuming the claims on the left, the claim on the right holds — checked by the archive's pipeline. Proof code is not displayed here.

Read the Lean proof on GitHub

Description

Two consecutive balanced reductions shrink the order by at least a factor of two. Induction on the binary-power bound then gives the stated logarithmic depth, also covering order zero.