Uniform zero-rate limit of the stable scale series #
A compact majorant makes the series jointly continuous in its rate and argument.
Reference: A. E. Kyprianou, Fluctuations of Lévy Processes with Applications, 2nd ed., Springer, 2014, Chapter 8.
theorem
BGW.StableTrees.continuousOn_stableSeries_rate_argument
{θ : ℝ}
(hθ : 1 < θ ∧ θ ≤ 2)
(K : ℝ)
:
ContinuousOn (fun (p : ℝ × ℝ) => stableSeries θ p.1 p.2) (Set.Icc 0 1 ×ˢ Set.Icc 0 K)
Joint continuity of the rate and spatial argument on compact positive rectangles.
theorem
BGW.StableTrees.tendstoUniformlyOn_stableSeries_zero
{θ : ℝ}
(hθ : 1 < θ ∧ θ ≤ 2)
(K : ℝ)
:
TendstoUniformlyOn (fun (q x : ℝ) => stableSeries θ q x) (stableScale θ) (nhdsWithin 0 (Set.Ioi 0)) (Set.Icc 0 K)
The scale series tends locally uniformly to the zero-rate scale.