Properties

Label 2.43.ae_co
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:  $1 - 4 x + 66 x^{2} - 172 x^{3} + 1849 x^{4}$
Frobenius angles:  $\pm0.323675367645$, $\pm0.570946805246$
Angle rank:  $2$ (numerical)
Number field:  4.0.2930688.6
Galois group:  $D_{4}$
Jacobians:  $140$
Cyclic group of points:    no
Non-cyclic primes:   $2$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $1740$ $3640080$ $6338181420$ $11687860070400$ $21613387056890700$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $40$ $1966$ $79720$ $3418702$ $147021400$ $6321243454$ $271816868440$ $11688203613598$ $502592695770760$ $21611482349838286$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 140 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 4.0.2930688.6.

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.e_co$2$(not in LMFDB)