Proof of `Subtracting selected atoms preserves pure annihilation` (3rd statement)
groundedproofs/Lax342547Proofs/SelectedRemoval.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
Each response is linear, so subtracting the selected part preserves its zero value on the original pure obstruction.