[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 10 from proof square-inject (previous step)

((m + n) * (m + n + 1)) % 2 = 0, ((m0 + n0) * (m0 + n0 + 1)) % 2 = 0, (m + n) * (m + n + 1) + 2 * n = (m0 + n0) * (m0 + n0 + 1) + 2 * n0 ⊦ ((m + n) * (m + n + 1)) / 2 + n = ((m0 + n0) * (m0 + n0 + 1)) / 2 + n0 ↔ m = m0 ∧ n = n0, 2 = 0

User applied rule insert spec-lemma

And obtained the following new goals

Rule argument

spec: nat-mult name: square-inject seq: m * (m + 1) + 2 * m0 = n * (n + 1) + 2 * n0, m0 ≤ m, n0 ≤ n ⊦ m = n ∧ m0 = n0 subst: [m, m0, n, n0] → [n + m, n, n0 + m0, n0]

Additional information

Used simplifier rules: square-even-02: ⊦ (m * m + m) % 2 = 0;%square-even-02: ⊦ (m * m + m) % 2 = 0;% ⊦ m + n = m + n0 ↔ n = n0; (s)%a: ⊦ (m + n0) + n1 = m + n0 + n1; from specification nat-basic%c: ⊦ m + n = n + m; from specification nat-basic% ⊦ m * (n + 1) = m * n + m; (s)%mult-a: ⊦ m0 * m * n = (m0 * m) * n; from specification nat-mult%mult-c: ⊦ m * n = n * m; from specification nat-mult% ⊦ (* m0) * m + m = (m0 + 1) * m; (s)% ⊦ m ≤ m + n; (s) Used terms: n + m, n, n0 + m0, n0