Boundary value problem for a class of elliptic differential equations with a segment of turning points is considered. Firstly, using the method of multiple scales the formal asymptotic solution with turning points is constructed. And then, the uniform validity for the asymptotic expansion of the solution is proved by using the comparison theorem.
JU Yang
,
FENG Yihu
,
HU Zhaoping
. Boundary value problem for singular perturbed elliptic difierential systems with a segment of turning points[J]. Journal of Shanghai University, 2025
, 31(6)
: 1057
-1066
.
DOI: 10.12066/j.issn.1007-2861.2321
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