Properties

Label 2.113.abb_os
Base field $\F_{113}$
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:  $\F_{113}$
Dimension:  $2$
L-polynomial:  $1 - 27 x + 382 x^{2} - 3051 x^{3} + 12769 x^{4}$
Frobenius angles:  $\pm0.160219280575$, $\pm0.371091486596$
Angle rank:  $2$ (numerical)
Number field:  4.0.442719900.1
Galois group:  $D_{4}$
Jacobians:  $132$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $10074$ $163501020$ $2084993053056$ $26586429979262400$ $339456300715300877994$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $87$ $12805$ $1445004$ $163059553$ $18424328007$ $2081952431890$ $235260585775239$ $26584442460059713$ $3004041940284342492$ $339456738957925867525$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 132 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{113}$.

Endomorphism algebra over $\F_{113}$
The endomorphism algebra of this simple isogeny class is 4.0.442719900.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.113.bb_os$2$(not in LMFDB)