Kun Cheng

ORCID: 0000-0003-4268-7165
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Research Areas
  • Nonlinear Partial Differential Equations
  • Advanced Mathematical Modeling in Engineering
  • Probability and Risk Models
  • Risk and Portfolio Optimization
  • Advanced Mathematical Physics Problems
  • Stochastic processes and financial applications
  • Nonlinear Differential Equations Analysis
  • Statistical Distribution Estimation and Applications
  • Numerical methods in inverse problems
  • Graph theory and applications
  • Insurance, Mortality, Demography, Risk Management
  • Synthesis and Properties of Aromatic Compounds
  • Stochastic processes and statistical mechanics
  • Evaluation Methods in Various Fields
  • Computational Drug Discovery Methods
  • Markov Chains and Monte Carlo Methods
  • Random Matrices and Applications
  • Financial Risk and Volatility Modeling
  • Advanced Harmonic Analysis Research
  • Diffusion and Search Dynamics
  • Quantum optics and atomic interactions
  • Wireless Communication Networks Research
  • advanced mathematical theories
  • Advanced Decision-Making Techniques
  • Advanced Graph Theory Research

Jingdezhen Ceramic Institute
2018-2024

South China Agricultural University
2020-2021

Northwest Normal University
2014

Dalian University of Technology
2011

Hanscom Air Force Base
1994

10.1016/j.jmaa.2018.06.071 article EN Journal of Mathematical Analysis and Applications 2018-06-28

We experimentally demonstrate time-domain storage and retrieval of amplitude- phase-encoded optical data, using Raman coherent population trapping, despite the loss information about absolute phases that occurs as a result dissipative nature process. In this process homogeneous decay coherence does not prevent interference between time-separated fields, thus relaxing requirement for long-lived coherences.

10.1364/ol.19.000296 article EN Optics Letters 1994-02-15

Abstract In this paper, we obtain equivalent conditions of complete moment convergence the maximum for partial weighted sums independent identically distributed random variables under sublinear expectations space. The results obtained in paper are extensions classical linear expectation

10.1186/s13660-021-02692-x article EN cc-by Journal of Inequalities and Applications 2021-09-23

By an inequality of partial sum and uniform convergence the central limit theorem under sublinear expectations, we establish precise asymptotics in law iterated logarithm for independent identically distributed random variables expectations.

10.1155/2021/6691857 article EN Mathematical Problems in Engineering 2021-02-12

10.1016/j.dam.2021.02.021 article EN Discrete Applied Mathematics 2021-02-26

<abstract><p>In this article, we study complete convergence and moment for negatively dependent random variables under sub-linear expectations. The results obtained in expectation spaces extend the corresponding ones probability space.</p></abstract>

10.3934/math.20221094 article EN cc-by AIMS Mathematics 2022-01-01

10.1016/j.dam.2020.03.048 article EN publisher-specific-oa Discrete Applied Mathematics 2020-04-04

10.1016/j.spl.2022.109464 article EN Statistics & Probability Letters 2022-03-14

Abstract In this paper, we study the complete convergence and moment of linear processes generated by negatively dependent random variables under sub-linear expectations. The obtained results complement ones Meng, Wang, Wu (Commun. Stat., Theory Methods 52(9):2931–2945, 2023) in case

10.1186/s13660-023-02990-6 article EN cc-by Journal of Inequalities and Applications 2023-05-29

We investigate the complete <math xmlns="http://www.w3.org/1998/Math/MathML" id="M2"> <mi>p</mi> </math> th moment convergence for weighted sums of independent, identically distributed random variables under sublinear expectations space. Using inequality and truncation methods, we prove equivalent conditions id="M3"> space, which complement corresponding results obtained in Guo Shan (2020).

10.1155/2021/7471550 article EN cc-by Discrete Dynamics in Nature and Society 2021-10-18

This paper is concerned with constructing nodal radial solutions for generalized quasilinear Schrödinger equations in $\mathbb{R}^N$ critical growth which arise from plasma physics, fluid mechanics, as well the self-channeling of a high-power ultashort laser matter. We find exponents and obtain existence sign-changing solution k nodes any given integer $k ≥ 0$.

10.3934/dcds.2017004 article EN Discrete and Continuous Dynamical Systems 2016-11-21

In this paper, we study the existence and concentration of positive solutions for following fractional Schr\”odinger logarithmic equation: \begin{equation*} \left\{ \begin{aligned} &amp; \varepsilon^{2s} (-\Delta)^{s} u+V(x)u =u\log u^2,\ x\in \mathbb{R}^N,\\ &amp;u\in H^s(\mathbb{R}^N), \end{aligned} \right. \end{equation*} where $\varepsilon &gt; 0$ is a small parameter, $N&gt;2s,$ $s \in ( 0 ,1), (-\Delta)^{s}$ Laplacian, potential $V$ continuous function having global minimum. Using...

10.22541/au.170668133.31902373/v1 preprint EN Authorea (Authorea) 2024-01-31

A connected graph is called fragile if it contains an independent vertex cut. In 2002 Chen and Yu proved that every of order $n$ size at most $2n-4$ fragile, in 2013 Le Pfender characterized the non-fragile graphs $2n-3.$ It natural to consider minimum cuts. We prove two results. (1) Every with $n\ge 7$ $\lfloor 3n/2\rfloor$ has cut; (2) $2n$ a foresty Both results are best possible.

10.48550/arxiv.2412.03869 preprint EN arXiv (Cornell University) 2024-12-04

10.1016/j.spl.2019.108632 article EN Statistics & Probability Letters 2019-09-26

By using Lebesgue bounded convergence theorem, we prove precise asymptotics in the law of iterated logarithm for independent and identically distributed random variables under sublinear expectation.

10.1155/2022/6058563 article EN Mathematical Problems in Engineering 2022-05-23

In this paper, we consider the fractional p&q-Laplacian equation: (−Δ)psu+(−Δ)qsu+V(x)(|u|p−2u+|u|q−2u)=K(x)f(u)inRN, where s∈(0,1),1<p<q<Ns, and (−Δ)ts with t∈{p,q} is t-Laplacian operator, f a C1 real function V, K are continuous, positive functions. By using constrained variational methods, quantitative Deformation Lemma Brouwer degree theory, prove existence of least energy sign-changing solution.

10.1080/17476933.2022.2142785 article EN Complex Variables and Elliptic Equations 2022-11-15

10.1016/j.amc.2021.126139 article EN Applied Mathematics and Computation 2021-03-07

&lt;abstract&gt;&lt;p&gt;This paper is dedicated to studying the following Kirchhoff-Schrödinger-Poisson system:&lt;/p&gt; &lt;p&gt;&lt;disp-formula&gt; &lt;label/&gt; &lt;tex-math id="FE1"&gt; \begin{document}$ \begin{equation*} \left\{\begin{array}{ll} - \left(a+b \int_{ \mathbb{R}^3} |\nabla u|^2 dx \right) \Delta u+V(|x|) u+\lambda\phi u = K(|x|)f(u), &amp;amp; x \in \mathbb{R}^{3}, \\ -\Delta \phi u^2, \end{array}\right. \end{equation*} $\end{document}...

10.3934/math.2022922 article EN cc-by AIMS Mathematics 2022-01-01

Let X , n ≥ 1 be a sequence of independent, identically distributed random variables under sublinear expectations with and . Write S 0 = 0, M max 0≤ k ≤ | |, 1. For d &gt; o ((log log ) − ), we obtain the exact rates in law iterated logarithm kind weighted infinite series as ε ↓ 0.

10.1155/2022/7566141 article EN cc-by Discrete Dynamics in Nature and Society 2022-01-01

Abstract In this paper, we study the existence of ground state solutions for following fractional Kirchhoff–Schrödinger–Poisson systems with general nonlinearities: <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <m:mrow> <m:mo>{</m:mo> <m:mtable columnalign="left"> <m:mtr <m:mtd <m:mo>(</m:mo> <m:mi>a</m:mi> <m:mo>+</m:mo> <m:mi>b</m:mi> <m:msubsup> <m:mo>[</m:mo> <m:mi>u</m:mi> <m:mo>]</m:mo> </m:mrow> <m:mi>s</m:mi> <m:mn>2</m:mn> </m:msubsup> <m:mo>)</m:mo>...

10.1515/ijnsns-2019-0205 article EN International Journal of Nonlinear Sciences and Numerical Simulation 2020-09-25

The complete convergence for weighted sums of sequences independent, identically distributed random variables under sublinear expectations space was studied. By moment inequality and truncation methods, we establish the equivalent conditions space. results extend corresponding obtained by Guo (2012) to those

10.48550/arxiv.2108.12085 preprint EN other-oa arXiv (Cornell University) 2021-01-01
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