54Cxx Maps and general types of spaces defined by maps

54C05  Continuous maps
54C08  Weak and generalized continuity
54C10  Special maps on topological spaces (open, closed, perfect,
               etc.)
54C15  Retraction
54C20  Extension of maps
54C25  Embedding
54C30  Real-valued functions, See also {26-XX}
54C35  Function spaces, See also {46Exx, 58D15}
54C40  Algebraic properties of function spaces, See also {46J10}
54C45  $C$- and $C$*-embedding
54C50  Special sets defined by functions, See also {26A21}
54C55  Absolute neighborhood extensor, absolute extensor, absolute
               neighborhood retract (ANR), absolute retract spaces
               (general properties), See also {55M15}
54C56  Shape theory, See also {55P55, 57N25}
54C60  Set-valued maps, See also {26E25, 28B20, 47H04, 58C06}
54C65  Selections, See also {28B20}
54C70  Entropy
54C99  None of the above but in this section