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15-XX - Linear and multilinear algebra; matrix theory [MSC 2020] |
47A50 - Equations and inequalities involving linear operators, with vector unknowns [MSC 2020] |
15A42 - Inequalities involving eigenvalues and eigenvectors [MSC 2020] |
39B72 - Systems of functional equations and inequalities [MSC 2020] |
47J20 - Variational and other types of inequalities involving nonlinear operators (general) [MSC 2020] |
15A45 - Miscellaneous inequalities involving matrices [MSC 2020] |
47A63 - Linear operator inequalities [MSC 2020] |
39B62 - Functional inequalities, including subadditivity, convexity, etc. [MSC 2020] |