.
interpretation "decomposed standard computation"
- 'Std M N = (dst M N).
+ 'DecomposedStd M N = (dst M N).
notation "hvbox( M break ⓢ↦* term 46 N )"
non associative with precedence 45
- for @{ 'Std $M $N }.
+ for @{ 'DecomposedStd $M $N }.
lemma dst_inv_lref: ∀M,N. M ⓢ↦* N → ∀j. #j = N →
∃∃s. is_whd s & M ↦*[s] #j.