| dirs0[n0] = mkdir(m, md, m0, m1, entries), ispath(p0, entries[name], n1, dirs0, files), name ∈ entries, n0 ∈ dirs0, dirs0 ⊥ dirs1, ∀ n0, n1, dirs0, files, dirs1. ispath(p0, n0, n1, dirs0, files) ∧ dirs0 ⊥ dirs1 → ispath(p0, n0, n1, dirs0 ∪ dirs1, files) ⊦ ispath(p0, entries[name], n1, dirs0 ∪ dirs1, files) |
Used terms: entries[name], n1, dirs0, files, dirs1