Proof of `Subtracting selected atoms preserves pure annihilation` (2nd 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
Expand the endpoint tuple into coordinate singletons, then use linearity and the selected-atom test on every term of the finite sums.