Mathematical Sciences Classification System
39Bxx - Functional equations and inequalities
[See also 30D05]
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39B05General
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39B12
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39B22
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39B32Equations for complex functions [See also 30D05]
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39B42Matrix and operator equations [See also 47Jxx]
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39B52Equations for functions with more general domains and/or ranges
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39B55Orthogonal additivity and other conditional equations
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39B62
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39B72Systems of functional equations and inequalities
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39B82Stability, separation, extension, and related topics [See also 46A22]
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39B99None of the above, but in this section