Lax Lean Archive

While this submission is a draft, it cannot be used by other submissions.

Proof of `Auerbach's lemma` (2nd statement)

groundedproofs/Lax606786Proofs/Auerbach.lean · lax-606786

What this proof establishes

thm✓Lax606786.AuerbachLemma (2nd statement)

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 GitLab

Description

Extend the coordinate functionals of an Auerbach basis by Hahn–Banach.