(* GENERIC ENTRYWISE EXTENSION OF CONTEXT-SENSITIVE REALTIONS FOR TERMS *****)
-(* Basic_2A1: includes: lpx_sn_atom lpx_sn_pair *)
inductive lexs (RN,RP:relation3 lenv bind bind): rtmap → relation lenv ≝
| lexs_atom: ∀f. lexs RN RP f (⋆) (⋆)
| lexs_next: ∀f,I1,I2,L1,L2.