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\begin{document}

\title{Boundary layer study of a nonlinear parabolic equation with a small
parameter}



\author[1]{qin xulong}%
\author[2]{xu zhao}%
\author[3]{wenshu zhou}%
\affil[1]{Sun Yat-Sen University}%
\affil[2]{Beifang University of Nationalities}%
\affil[3]{Dalian Minzu University}%


\vspace{-1em}



  
  \date{May 26, 2024}


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\begin{abstract}
This paper is concerned with the initial-boundary value problem for a
nonlinear parabolic equation with a small parameter. The existence of a
boundary layer as the parameter goes to zero is obtained together with
the estimation on the thickness of the boundary layer. The main result
extends an earlier work of Frid and Shelukhin (1999).%
\end{abstract}%



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