Properties

Label 2.73.aq_hi
Base field $\F_{73}$
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:  $\F_{73}$
Dimension:  $2$
L-polynomial:  $1 - 16 x + 190 x^{2} - 1168 x^{3} + 5329 x^{4}$
Frobenius angles:  $\pm0.239577523273$, $\pm0.433808068281$
Angle rank:  $2$ (numerical)
Number field:  4.0.3725.1
Galois group:  $D_{4}$
Jacobians:  $206$
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $4336$ $29068544$ $151926888304$ $806556286078976$ $4297616507507407216$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $58$ $5454$ $390538$ $28401630$ $2073067098$ $151334625198$ $11047401612970$ $806460042297534$ $58871585816771194$ $4297625826350816014$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 206 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{73}$.

Endomorphism algebra over $\F_{73}$
The endomorphism algebra of this simple isogeny class is 4.0.3725.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.73.q_hi$2$(not in LMFDB)