Proof of `Hardness of P | M_j | Σ w_j Z_j under the standard reading` (1st statement)
What this proof establishes
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
The standard word fpt-reduces to the word of interval scheduling, where lax-888481's algorithm decides the problem in fixed-parameter time.