Properties

Label 2.79.g_de
Base field $\F_{79}$
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:  $\F_{79}$
Dimension:  $2$
L-polynomial:  $1 + 6 x + 82 x^{2} + 474 x^{3} + 6241 x^{4}$
Frobenius angles:  $\pm0.386223475607$, $\pm0.741249389827$
Angle rank:  $2$ (numerical)
Number field:  4.0.37107600.1
Galois group:  $D_{4}$
Jacobians:  $504$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $6804$ $39762576$ $243166992516$ $1517523762311424$ $9467736644970597924$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $86$ $6370$ $493202$ $38960734$ $3076881086$ $243086758306$ $19203921485114$ $1517108808704254$ $119851596389532998$ $9468276078710769250$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 504 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{79}$.

Endomorphism algebra over $\F_{79}$
The endomorphism algebra of this simple isogeny class is 4.0.37107600.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.79.ag_de$2$(not in LMFDB)