coq-library-undecidability
coq-library-undecidability copied to clipboard
Higher-order beta-matching
- added higher-order matching wrt. beta-equivalence
HOMbeta
- added reduction from
SSTS01
toHOMbeta
resulting inundecidable HOMbeta
The reduction is quite different from the known technique by Loader [1].
It is based on the technique used for intersection type inhabitation, see IntersectionTypes/Reductions/SSTS01_to_CD_INH.v
, sharing a common seed. A write up for a potential publication is in progress.
[1] Loader, Ralph. "Higher order β-matching is undecidable." Logic Journal of the IGPL 11.1 (2003): 51-68.