Abelian variety isogeny class 1.47.d over $\F_{47}$

• Label: 1.47.d
• Base field: $\F_{47}$
• Dimension: $1$
• $p$-rank: $1$
• Ordinary: yes
• Supersingular: no
• Simple: yes
• Geometrically simple: yes
• Primitive: yes
• Principally polarizable: yes
• Contains a Jacobian: yes

Invariants

Base field:	$\F_{47}$
Dimension:	$1$
L-polynomial:	$1 + 3 x + 47 x^{2}$
Frobenius angles:	$\pm0.570213408102$
Angle rank:	$1$ (numerical)
Number field:	\(\Q(\sqrt{-179}) \)
Galois group:	$C_2$
Jacobians:	$5$
Isomorphism classes:	5

This isogeny class is simple and geometrically simple, primitive, ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

This isogeny class is ordinary.

$p$-rank:	$1$
Slopes:	$[0, 1]$

Point counts

Point counts of the abelian variety

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$51$	$2295$	$103428$	$4876875$	$229372041$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$51$	$2295$	$103428$	$4876875$	$229372041$	$10779266160$	$506621697423$	$23811288541875$	$1119130534345356$	$52599131963736975$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 5 curves (of which 0 are hyperelliptic):

• $y^2=x^3+46 x+42$
• $y^2=x^3+14 x+23$
• $y^2=x^3+24 x+24$
• $y^2=x^3+20 x+20$
• $y^2=x^3+42 x+22$

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{47}$.

Endomorphism algebra over $\F_{47}$

The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-179}) \).

Base change

This is a primitive isogeny class.

Twists

Below is a list of all twists of this isogeny class.

Twist	Extension degree	Common base change
1.47.ad	$2$	(not in LMFDB)