| refs = r + refs0, junkrefs(str, refs, st[r -- _type] .type, st[r0 -- sk, val]) ⊦ sk = _type, refs = [], junkref(str, r, st), path∃+(str, r, r0, st) |
junkrefs(str, r ' + refs0, st[r -- _type] .type, st[r0 -- sk, val]) ⊦ sk = _type, junkref(str, r, st), path∃+(str, r, r0, st)
[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' + refs ≠ []], [CSIMPSEQ : ⊦ r + refs = r ' + refs])]]