Acta mathematica scientia, Series B >
THE INTERIOR LAYER FOR A NONLINEAR SINGULARLY PERTURBED DIFFERENTIAL-DIFFERENCE EQUATION
Received date: 2010-09-23
Revised date: 2011-03-12
Online published: 2012-03-20
Supported by
Supported by the National Natural Science Funds (11071075), the Natural Science Foundation of Shanghai (10ZR1409200), the National Laboratory of Biomacro-molecules, Institute of Biophysics, Chinese Academy of Sciences, and the E-Institutes of Shanghai Municipal
Education Commissions (E03004).
In this article, the interior layer for a second order nonlinear singularly per-turbed differential-difference equation is considered. Using the methods of boundary func-tion and fractional steps, we construct the formula of asymptotic expansion and point out that the boundary layer at t = 0 has a great influence upon the interior layer at t = σ. At the same time, on the basis of differential inequality techniques, the existence of the smooth solution and the uniform validity of the asymptotic expansion are proved. Finally, an example is given to demonstrate the effectiveness of our result. The result of this article is new and it complements the previously known ones.
WANG Ai-Feng , NI Ming-Kang . THE INTERIOR LAYER FOR A NONLINEAR SINGULARLY PERTURBED DIFFERENTIAL-DIFFERENCE EQUATION[J]. Acta mathematica scientia, Series B, 2012 , 32(2) : 695 -709 . DOI: 10.1016/S0252-9602(12)60049-6
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