Properties

Label 2.43.d_an
Base field $\F_{43}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{43}$
Dimension:  $2$
L-polynomial:  $1 + 3 x - 13 x^{2} + 129 x^{3} + 1849 x^{4}$
Frobenius angles:  $\pm0.273564909267$, $\pm0.843545047325$
Angle rank:  $2$ (numerical)
Number field:  4.0.94525.1
Galois group:  $D_{4}$
Jacobians:  $72$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $1969$ $3357145$ $6363766651$ $11705172828525$ $21610157583347344$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $47$ $1815$ $80039$ $3423763$ $146999432$ $6321450795$ $271816608929$ $11688199414483$ $502592593841957$ $21611482452388950$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 72 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{43}$.

Endomorphism algebra over $\F_{43}$
The endomorphism algebra of this simple isogeny class is 4.0.94525.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.43.ad_an$2$(not in LMFDB)