English

Maximal functions associated to flat plane curves with Mitigating factors

Classical Analysis and ODEs 2018-03-23 v2

Abstract

We study the boundedness problem for maximal operators Mσ\mathbb{M}_{\sigma} associated to flat plane curves with Mitigating factors, defined by Mσf(x):=sup1t201f(xtΓ(s))(κ(s))σds,\mathbb{M}_{\sigma}f(x) \, := \, \sup_{1 \leq t \leq 2} \left|\int_{0}^{1} f(x-t\Gamma(s)) \, (\kappa(s))^{\sigma} \, ds\right|, where κ(s)\kappa(s) denotes the curvature of the curve Γ(s)=(s,g(s)+1), g(s)C5[0,1]\Gamma(s)=(s, g(s)+1), ~g(s) \in C^5[0,1] in R2\mathbb{R}^2. Let \triangle be the closed triangle with vertices P=(25,15), Q=(12,12), R=(0,0).P=(\frac{2}{5}, \frac{1}{5}), ~ Q=(\frac{1}{2}, \frac{1}{2}), ~ R=(0, 0). In this paper, we prove that for (1p,1q)[(1p,1q):(1p,1q){P,Q}][(1p,1q):q>max{σ1,2}] (\frac{1}{p}, \frac{1}{q}) \in \left[(\frac{1}{p}, \frac{1}{q}) :(\frac{1}{p}, \frac{1}{q}) \in \triangle \setminus \{P, Q\} \right] \cap \left[(\frac{1}{p}, \frac{1}{q}) :q > max\{\sigma^{-1},2\} \right], there is a constant BB such that MfLq(R2)BfLp(R2). \|\mathbb{M}f\|_{L^q(\mathbb{R}^2)} \leq \, B \, \|f\|_{L^p(\mathbb{R}^2)}.

Keywords

Cite

@article{arxiv.1609.08140,
  title  = {Maximal functions associated to flat plane curves with Mitigating factors},
  author = {Ramesh Manna},
  journal= {arXiv preprint arXiv:1609.08140},
  year   = {2018}
}

Comments

16 pages

R2 v1 2026-06-22T16:01:57.822Z