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Asymptotical behavior of one class of $p$-adic singular Fourier integrals

Mathematical Physics 2008-08-26 v1 General Mathematics math.MP

Abstract

We study the asymptotical behavior of the pp-adic singular Fourier integrals Jπα,m;ϕ(t)=<fπα;m(x)χp(xt),ϕ(x)>=F[fπα;mϕ](t),tp,t\bQp, J_{\pi_{\alpha},m;\phi}(t) =\bigl< f_{\pi_{\alpha};m}(x)\chi_p(xt), \phi(x)\bigr> =F\big[f_{\pi_{\alpha};m}\phi\big](t), \quad |t|_p \to \infty, \quad t\in \bQ_p, where fπα;m\cD(\bQp)f_{\pi_{\alpha};m}\in {\cD}'(\bQ_p) is a {\em quasi associated homogeneous} distribution (generalized function) of degree πα(x)=xpα1π1(x)\pi_{\alpha}(x)=|x|_p^{\alpha-1}\pi_1(x) and order mm, πα(x)\pi_{\alpha}(x), π1(x)\pi_1(x), and χp(x)\chi_p(x) are a multiplicative, a normed multiplicative, and an additive characters of the field \bQp\bQ_p of pp-adic numbers, respectively, ϕ\cD(\bQp)\phi \in {\cD}(\bQ_p) is a test function, m=0,1,2...m=0,1,2..., α\bC\alpha\in \bC. If Reα>0Re\alpha>0 the constructed asymptotics constitute a pp-adic version of the well known Erd\'elyi lemma. Theorems which give asymptotic expansions of singular Fourier integrals are the Abelian type theorems. In contrast to the real case, all constructed asymptotics have the {\it stabilization} property.

Keywords

Cite

@article{arxiv.0808.3252,
  title  = {Asymptotical behavior of one class of $p$-adic singular Fourier integrals},
  author = {A. Yu. Khrennikov and V. M. Shelkovich},
  journal= {arXiv preprint arXiv:0808.3252},
  year   = {2008}
}