Section DETERMINACY.
Variable L: semantics.
Hypothesis DET: determinate L.

(* Specifications: *)
Lemma sd_determ_1:
forall s t1 s1 t2 s2,
Step L s t1 s1 -> Step L s t2 s2 -> match_traces (symbolenv L) t1 t2.
Lemma sd_determ_2:
forall s t s1 s2,
Step L s t s1 -> Step L s t s2 -> s1 = s2.
Lemma star_determinacy:
forall s t s', Star L s t s' ->
forall s'', Star L s t s'' -> Star L s' E0 s'' \/ Star L s'' E0 s'.