Proof of `Compositions of prime rational functions are rational`
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
A composition of prime rational functions is rational (Theorem B.2.6, ⇐).
Attribution
Theorem B.2.6 of Transducers; Lean proof by Aristotle ().