# New PDF release: A Central Limit Theorem for the L2 Error of Positive Wavelet

By Ghora J.K.

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**Additional resources for A Central Limit Theorem for the L2 Error of Positive Wavelet Density Estimator**

**Example text**

P + κn Then the computation of m = u − uxx gives ∞ m(x, t) = −∞ δ(x − g(ξ, t))p(ξ, t)dξ − ω. (23) April 24, 2007 17:34 40 WSPC - Proceedings Trim Size: 9in x 6in pcsvf2006 A. I. Ivanov From the CH equation mt + umx = −2(m + ω)ux , (20) and (23) it follows g(ξ, ˙ t) = 1 2 ∞ e−|g(ξ,t)−g(ξ,t)| p(ξ, t)dξ − ω, g(ξ, ˙ t) = u(g(ξ, t), t), 0 therefore g(x, t) in (21) is the diﬀeomorphism (Virasoro group element) in the purely solitonic case. The situation when the condition m(x, 0) + ω > 0 on the initial data does not hold is more complicated and requires separate analysis (if m(x, 0) + ω changes sign there are inﬁnitely many positive eigenvalues accumulating at inﬁnity and singularities might appear in ﬁnite time [3,4]).

It is also known that the sign of K inﬂuences the geodesic rays ([5]). Indeed, if K > 0, then the geodesic bunch together (are Jacobi stable), and if K < 0, then they disperse (are Jacobi unstable). Hence negative ﬂag curvature is equivalent to positive eigenvalues of Pji , and positive ﬂag curvature is equivalent to negative eigenvalues of Pji . 1 ([1,2]). The trajectories of (3) are Jacobi stable if and only if the real parts of the eigenvalues of the deviation tensor Pij are strict negative everywhere, and Jacobi unstable, otherwise.

So each almost K¨ ahler manifold is a symplectic one. 1. e. J˜∗ dϕ = dϕJ ∗ . T ∗ M and J˜∗ on T ∗ M Here the automorphim J ∗ is deﬁned on T ∗ M as conjugate automorphism of the automorphism J of the tangent bundle T M of the manifold M . 1. 2. Real analyticity of a smooth manifold with two symplectic-homotopic symplectic forms ω0 and ω1 Let M be a smooth paracompact manifold with two symplectic-homotopic symplectic forms ω0 and ω1 . This means that there exists a homotopy operator H(p, t) : M × I → ∧2 T ∗ M , I being the unit interval in R1 , such that H(p, t) is a continuous mapping, H(p, t) = ωt (p) where ωt are symplectic forms and H(p, 0) = ω0 (p), H(p, 1) = ω1 (p).

### A Central Limit Theorem for the L2 Error of Positive Wavelet Density Estimator by Ghora J.K.

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