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55Qxx - Homotopy groups

55Q05 - Homotopy groups, general; sets of homotopy classes
55Q07 - Shape groups
55Q10 - Stable homotopy groups
55Q15 - Whitehead products and generalizations
55Q20 - Homotopy groups of wedges, joins, and simple spaces
55Q25 - Hopf invariants
55Q35 - Operations in homotopy groups
55Q40 - Homotopy groups of spheres
55Q45 - Stable homotopy of spheres
55Q50 - $J$-morphism
55Q51 - $v_n$-periodicity
55Q52 - Homotopy groups of special spaces
55Q55 - Cohomotopy groups
55Q70 - Homotopy groups of special types
55Q91 - Equivariant homotopy groups
55Q99 - Miscellaneous
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