Proof of `Independent ordered mixer blocks at distinct labels` (5th statement)
groundedproofs/Lax342547Proofs/OrderedMixerLaw.lean · lax-342547
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.
Description
Take a left inverse of the combined columns. Pull back a block matrix whose off-diagonal blocks are the two prescribed ordered restrictions.