Theorem: Int.le_ceil_iff (Carleson/Carleson.lean)

State before:
X : Type u_1
a : ℝ
inst✝⁵ : MetricSpace X
inst✝⁴ : IsSpaceOfHomogeneousType X a
inst✝³ : Inhabited X
τ q q' C : ℝ
Θ : Set C(X, ℂ)
inst✝² : IsCompatible Θ
inst✝¹ : IsCancellative a Θ
F G : Set X
K : X → X → ℂ
inst✝ : IsCZKernel a K
D : ℝ
ψ : ℝ → ℝ
s : ℤ
x y : X
hD : D > D1_1 a τ q
hψ : LipschitzWith (Cψ1_1 a τ q) ψ
h2ψ : support ψ = Ioo (4 * D)⁻¹ 2⁻¹
h3ψ : ∀ x > 0, ∑ s ∈ nonzeroS D x, ψ (D ^ s * x) = 1
c : ℝ
z : ℤ
⊢ z ≤ ⌈c⌉ ↔ ↑z - 1 < c
Tactic:
rw_mod_cast [← Int.add_one_le_ceil_iff, sub_add_cancel]
State after:
no goals