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01A10 - History of mathematics in Paleolithic and Neolithic times [MSC 2020] |
34K05 - General theory of functional-differential equations [MSC 2020] |
34K20 - Stability theory of functional-differential equations [MSC 2020] |
34K25 - Asymptotic theory of functional-differential equations [MSC 2020] |
34K35 - Control problems for functional-differential equations [MSC 2020] |
34K50 - Stochastic functional-differential equations [MSC 2020] |
34L05 - General spectral theory of ordinary differential operators [MSC 2020] |
34L10 - Eigenfunctions, eigenfunction expansions, completeness of eigenfunctions of ordinary differential operators [MSC 2020] |
34L30 - Nonlinear ordinary differential operators [MSC 2020] |
35A01 - Existence problems for PDEs: global existence, local existence, non-existence [MSC 2020] |
35P05 - General topics in linear spectral theory for PDEs [MSC 2020] |
41A15 - Spline approximation [MSC 2020] |
47-XX - Operator theory [MSC 2020] |
47A10 - Spectrum, resolvent [MSC 2020] |
47A11 - Local spectral properties of linear operators [MSC 2020] |
47A53 - (Semi-) Fredholm operators; index theories [MSC 2020] |
47A55 - Perturbation theory of linear operator [MSC 2020] |
47H10 - Fixed-point theorems [MSC 2020] |
54C15 - Retraction [MSC 2020] |
54C20 - Extension of maps [MSC 2020] |
54C55 - Absolute neighborhood extensor, absolute extensor, absolute neighborhood retract (ANR), absolute retract spaces (general properties) [MSC 2020] |
55M15 - Absolute neighborhood retracts [MSC 2020] |