Homotopy group with coefficients explained
In topology, a branch of mathematics, for
, the
i-th homotopy group with coefficients in an
abelian group G of a
based space X is the
pointed set of
homotopy classes of based maps from the
Moore space of type
to
X, and is denoted by
. For
,
is a
group. The groups
are the usual
homotopy groups of
X.
References
