Schur multiplier
= Schur multiplier
{c}
{title2=$M(G)$}
{wiki}
The Schur multiplier of a group $G$ is its second integral <group homology> group:
$$
M(G)=H_2(G,\mathbb Z).
$$
= Schur multiplier
{c}
{title2=$M(G)$}
{wiki}
The Schur multiplier of a group $G$ is its second integral <group homology> group:
$$
M(G)=H_2(G,\mathbb Z).
$$