[Imprint][Data Privacy Statement][E-Mail]



View long theorem info. View the proof. Back to main index. View the specification. View theorem base summary, View theorem base listing, the used properties by spec, the dependency list, the symbol table,

Proof step 156 from proof infinite-append-prefixnextli (previous step)

ii(0) = 0, lf(0) = [], ∀ n. ii(n + 1) = ii(n) + # nextli0(lf(n)) ∧ ¬ # σ < ⌜ii(n + 1)⌝ ∧ (σ from ii(n)) to # nextli0(lf(n)) = ⌜nextli0(lf(n))⌝ , ∀ m, n. m ≤ n → ii(m) ≤ ii(n), ∀ n. lf(n + 1) = nextli(lf(n)), ∀ x. nextli(x) = x + nextli0(x), (finp(σ) ⊃ # σ = ⌜ii(n)⌝ ∧ (∀ m. n ≤ m → nextli0(lf(m)) = [] ∧ ii(m) = ii(n));∀ n. ∃ m. ii(m) ≤ n ∧ n < ii(m + 1)) ⊦ lf(n2) = (σ to ii(n2)).l, ¬ # σ < ⌜ii(n0 + 1)⌝ ∧ σ to ii(n0 + 1) = ⌜nextli((σ to ii(n0)).l)⌝ ∧ (# σ = ⌜ii(n0)⌝ ⊃ ii(n0) = ii(n0 + 1);ii(n0) < ii(n0 + 1)) ∧ (finp(σ) ⊃ ∃ n. # σ = ⌜ii(n)⌝ ∧ ⌜nextli(σ.l)⌝ = σ ∧ (∀ m. (n ≤ m ⊃ ii(m) = ii(n);ii(m) < ii(m + 1)));∃ m. ii(m) ≤ n1 ∧ n1 < ii(m + 1))

User applied rule weakening

And obtained the following new goals

Rule argument

poslist: right 2

Additional information