Fact dio_rel_alpha_size : df_size (proj1_sig (dio_rel_alpha (dio_expr_var 0) (dio_expr_var 1) (dio_expr_var 2))) = 490.

Theorem dio_rel_expo p q r : 𝔻P p -> 𝔻P q -> 𝔻P r -> 𝔻R (fun ν => p ν = expo (r ν) (q ν)).