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47-XX - Operator theory [MSC 2020] |
34-XX - Ordinary differential equations [MSC 2020] |
47Exx - Ordinary differential operators [MSC 2020] |
34A30 - Linear ordinary differential equations and systems, general [MSC 2020] |
45Bxx - Fredholm integral equations [MSC 2020] |
34B05 - Linear boundary value problems for ordinary differential equations [MSC 2020] |
35A08 - Fundamental solutions to PDEs [MSC 2020] |
35P10 - Completeness of eigenfunctions and eigenfunction expansions in context of PDEs [MSC 2020] |
47A70 - (Generalized) eigenfunction expansions of linear operators; rigged Hilbert spaces [MSC 2020] |
47A05 - General (adjoints, conjugates, products, inverses, domains, ranges, etc.) [MSC 2020] |
34A05 - Explicit solutions and reductions of ordinary differential equations [MSC 2020] |
35A01 - Existence problems for PDEs: global existence, local existence, non-existence [MSC 2020] |
35A02 - Uniqueness problems for PDEs: global uniqueness, local uniqueness, non-uniqueness [MSC 2020] |
34Lxx - Ordinary differential operators [MSC 2020] |