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35-XX - Partial differential equations [MSC 2020] |
34E15 - Singular perturbations, general theory for ordinary differential equation [MSC 2020] |
34-XX - Ordinary differential equations [MSC 2020] |
34E05 - Asymptotic expansions of solutions to ordinary differential equation [MSC 2020] |
34E10 - Perturbations, asymptotics of solutions to ordinary differential equation [MSC 2020] |
35B27 - Homogenization in context of PDEs ; PDEs in media with periodic structure [MSC 2020] |
35C20 - Asymptotic expansions of solutions to PDEs [MSC 2020] |
34E20 - Singular perturbations, turning point theory, WKB methods for ordinary differential equation [MSC 2020] |