Abelian variety isogeny class 2.41.aw_hs over $\F_{41}$

• Label: 2.41.aw_hs
• Base field: $\F_{41}$
• Dimension: $2$
• $p$-rank: $2$
• Ordinary: yes
• Supersingular: no
• Simple: yes
• Geometrically simple: yes
• Primitive: yes
• Principally polarizable: yes
• Contains a Jacobian: yes

Invariants

Base field:	$\F_{41}$
Dimension:	$2$
L-polynomial:	$1 - 22 x + 200 x^{2} - 902 x^{3} + 1681 x^{4}$
Frobenius angles:	$\pm0.0342814512664$, $\pm0.242437523324$
Angle rank:	$2$ (numerical)
Number field:	4.0.21312.1
Galois group:	$D_{4}$
Jacobians:	$2$
Isomorphism classes:	2

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:	$2$
Slopes:	$[0, 0, 1, 1]$

Point counts

Point counts of the abelian variety

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$958$	$2688148$	$4739456878$	$7985745779152$	$13422478261803358$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$20$	$1598$	$68768$	$2826054$	$115854640$	$4750013774$	$194753118244$	$7984915998910$	$327381883480484$	$13422659145789518$

Jacobians and polarizations

This isogeny class contains the Jacobians of 2 curves (of which all are hyperelliptic), and hence is principally polarizable:

• $y^2=35x^6+30x^5+34x^4+x^3+16x^2+11x+11$
• $y^2=24x^6+10x^5+27x^3+22x^2+25x+30$

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{41}$.

Endomorphism algebra over $\F_{41}$

The endomorphism algebra of this simple isogeny class is 4.0.21312.1.

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
2.41.w_hs	$2$	(not in LMFDB)