always equidistributed in a union of closed subnilmanifolds of G/Γ. In this paper we give a
quantitative version of Leibman's result, describing the uniform distribution properties of a
finite polynomial orbit (g (n) Γ) n∈[N] in a nilmanifold. More specifically we show that there is
a factorisation g= εg′ γ, where ε (n) is" smooth,"(γ (n) Γ) n∈ ℤ is periodic and" rational," and
(g′(n) Γ) n∈ P is uniformly distributed (up to a specified error δ) inside some …