Mathematical Sciences Classification System
54Cxx - Maps and general types of spaces defined by maps
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54C05Continuous maps
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54C08Weak and generalized continuity
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54C10Special maps on topological spaces (open, closed, perfect, etc.)
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54C15Retraction
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54C20Extension of maps
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54C25Embedding
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54C30Real-valued functions [See also 26-XX]
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54C35
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54C40Algebraic properties of function spaces [See also 46J10]
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54C45$C$- and $C^*$-embedding
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54C50Special sets defined by functions [See also 26A21]
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54C55Absolute neighborhood extensor, absolute extensor, absolute neighborhood retract (ANR), absolute retract spaces (general properties) [See also 55M15]
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54C56
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54C60
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54C65Selections [See also 28B20]
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54C70Entropy
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54C99None of the above, but in this section