English
The polynomials for repeated addition by a natural number are given by wittNSMul p n = wittStructureInt p (n • X0).
Русский
Полиномы для повторного сложения на натуральное число: wittNSMul p n = wittStructureInt p (n • X0).
LaTeX
$$$\\mathrm{WittVector.wittNSMul}(p,n) = wittStructureInt(p, n \\cdot X_0)$$$
Lean4
/-- The polynomials used for defining repeated addition of the ring of Witt vectors. -/
def wittNSMul (n : ℕ) : ℕ → MvPolynomial (Fin 1 × ℕ) ℤ :=
wittStructureInt p (n • X (0 : (Fin 1)))