Properties

Label 70.3.70.a1.a1
Order $ 1 $
Index $ 2 \cdot 5 \cdot 7 $
Normal Yes

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Subgroup ($H$) information

Description:$C_1$
Order: $1$
Index: \(70\)\(\medspace = 2 \cdot 5 \cdot 7 \)
Exponent: $1$
Generators:
Nilpotency class: $0$
Derived length: $0$

The subgroup is the center (hence characteristic, normal, abelian, central, nilpotent, solvable, supersolvable, monomial, metabelian, and an A-group), the Frattini subgroup, a direct factor, cyclic (hence elementary (for every $p$), hyperelementary, metacyclic, and a Z-group), stem, a $p$-group (for every $p$), perfect, and rational.

Ambient group ($G$) information

Description: $D_{35}$
Order: \(70\)\(\medspace = 2 \cdot 5 \cdot 7 \)
Exponent: \(70\)\(\medspace = 2 \cdot 5 \cdot 7 \)
Derived length:$2$

The ambient group is nonabelian, a Z-group (hence solvable, supersolvable, monomial, metacyclic, metabelian, and an A-group), and hyperelementary for $p = 2$.

Quotient group ($Q$) structure

Description: $D_{35}$
Order: \(70\)\(\medspace = 2 \cdot 5 \cdot 7 \)
Exponent: \(70\)\(\medspace = 2 \cdot 5 \cdot 7 \)
Automorphism Group: $F_5\times F_7$, of order \(840\)\(\medspace = 2^{3} \cdot 3 \cdot 5 \cdot 7 \)
Outer Automorphisms: $C_{12}$, of order \(12\)\(\medspace = 2^{2} \cdot 3 \)
Nilpotency class: $-1$
Derived length: $2$

The quotient is nonabelian, a Z-group (hence solvable, supersolvable, monomial, metacyclic, metabelian, and an A-group), and hyperelementary for $p = 2$.

Automorphism information

Since the subgroup $H$ is characteristic, the automorphism group $\operatorname{Aut}(G)$ of the ambient group acts on $H$, yielding a homomorphism $\operatorname{res} : \operatorname{Aut}(G) \to \operatorname{Aut}(H)$. The image of $\operatorname{res}$ on the inner automorphism group $\operatorname{Inn}(G)$ is the Weyl group $W = G / Z_G(H)$.

$\operatorname{Aut}(G)$$F_5\times F_7$, of order \(840\)\(\medspace = 2^{3} \cdot 3 \cdot 5 \cdot 7 \)
$\operatorname{Aut}(H)$ $C_1$, of order $1$
$W$$C_1$, of order $1$

Related subgroups

Centralizer:$D_{35}$
Normalizer:$D_{35}$
Complements:$D_{35}$
Minimal over-subgroups:$C_7$$C_5$$C_2$

Other information

Möbius function$-35$
Projective image$D_{35}$