Properties

Label 2.53.g_du
Base field $\F_{53}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

Related objects

Downloads

Learn more

Invariants

Base field:  $\F_{53}$
Dimension:  $2$
L-polynomial:  $1 + 6 x + 98 x^{2} + 318 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.475422686686$, $\pm0.662717354792$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-222 -30 \sqrt{17}})\)
Galois group:  $D_{4}$
Jacobians:  $176$
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3232$ $8351488$ $22076088736$ $62237693804544$ $174890484370486432$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $60$ $2970$ $148284$ $7887694$ $418202700$ $22164330570$ $1174713172140$ $62259686752414$ $3299763404066652$ $174887471290073850$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 176 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{53}$.

Endomorphism algebra over $\F_{53}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-222 -30 \sqrt{17}})\).

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.53.ag_du$2$(not in LMFDB)