Double cover of symmetric group:S5 of minus type

Definition
This group is defined as the member of family::double cover of symmetric group for symmetric group:S5 that is of "-" type. In particular it is one of the Schur covering groups for symmetric group:S5, and is thus one of the stem extensions where the base normal subgroup is cyclic group:Z2 and the quotient group is symmetric group:S5.

The group is denoted $$2 \cdot S_5^-$$.