Properties

Label 2.113.abj_ud
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

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Invariants

Base field:  $\F_{113}$
Dimension:  $2$
L-polynomial:  $1 - 35 x + 523 x^{2} - 3955 x^{3} + 12769 x^{4}$
Frobenius angles:  $\pm0.0830136176920$, $\pm0.261946670442$
Angle rank:  $2$ (numerical)
Number field:  4.0.9995069.2
Galois group:  $D_{4}$
Jacobians:  $28$
Isomorphism classes:  28

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $9303$ $160783749$ $2082203944191$ $26586462576448341$ $339458235075501078768$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $79$ $12591$ $1443073$ $163059755$ $18424432994$ $2081951090847$ $235260529195253$ $26584441778331379$ $3004041938912822299$ $339456739037455057086$

Jacobians and polarizations

This isogeny class contains the Jacobians of 28 curves (of which all are hyperelliptic), and hence is principally polarizable:

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 4.0.9995069.2.

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.bj_ud$2$(not in LMFDB)