Stable homotopy group
-stable homotopy group
, of a topological space
The inductive limit of the sequence
![]() | (*) |
where is the suspension over the topological space
. The suspension homomorphism
relates the class of the spheroid
to the class of the spheroid
, where
is obtained by factorization from the mapping
. The sequence (*) stabilizes at the
-rd term (see [2]), so that
.
In calculating stable homotopy groups, the Adams spectral sequence is used (see [1]). Up till now (1991), no stable homotopy group is known at all for any incontractible space. However, partial calculations are known for the homotopy groups of the spheres (cf. Spheres, homotopy groups of the), for an infinite-dimensional real projective space and for various other spaces.
References
[1] | D.B. Fuks, A.T. Fomenko, V.L. Gutenmakher, "Homotopic topology" , Moscow (1969) (In Russian) |
[2] | J. Whitehead, "Recent advances in homotopy theory" , Amer. Math. Soc. (1970) |
Stable homotopy group. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Stable_homotopy_group&oldid=17968