55XX 


Algebraic topology 

55Mxx 

Classical topics {For the topology of Euclidean spaces and manifolds, see 57Nxx} 


55M05 
Duality 


55M10 
Dimension theory [See also 54F45] 


55M15 
Absolute neighborhood retracts [See also 54C55] 


55M20 
Fixed points and coincidences [See also 54H25] 


55M25 
Degree, winding number 


55M30 
LjusternikSchnirelman (LyusternikShnirelสนman) category of a space 


55M35 
Finite groups of transformations (including Smith theory) [See also 57S17] 


55M99 
None of the above, but in this section 