Kome, SureAtay, Mehmet TarikEryilmaz, AytekinKome, CahitSimos, TETsitouras, C2019-08-012019-08-012015978-0-7354-1287-30094-243Xhttps://dx.doi.org/10.1063/1.4912576https://hdl.handle.net/11480/4045International Conference on Numerical Analysis and Applied Mathematics (ICNAAM) -- SEP 22-28, 2014 -- Rhodes, GREECEIn this paper, Magnus expansion method which is based on Lie groups and Lie algebras is presented to solve singularly perturbed boundary value problems having boundary layers. Numerical results are obtained by using different step sizes and small epsilon values which makes the problem stiff or nonstiff. In addition, maximum errors norms with L-infinity are tabulated in detail to show efficiency of the method.eninfo:eu-repo/semantics/closedAccessMagnus Expansion MethodLie Group MethodsSingular PerturbationTurning PointBoundary Value ProblemsConference Object164810.1063/1.49125762-s2.0-84939647873N/AWOS:000355339701127N/A