Properties

Label 3.19.a_r_cm
Base field $\F_{19}$
Dimension $3$
$p$-rank $3$
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:  $\F_{19}$
Dimension:  $3$
L-polynomial:  $1 + 17 x^{2} + 64 x^{3} + 323 x^{4} + 6859 x^{6}$
Frobenius angles:  $\pm0.292907998461$, $\pm0.436437763097$, $\pm0.797312293949$
Angle rank:  $3$ (numerical)
Number field:  6.0.76139264.1
Galois group:  $S_4\times C_2$
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:  $3$
Slopes:  $[0, 0, 0, 1, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $7264$ $51835904$ $331868501152$ $2225460499251200$ $15147807980111993824$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $20$ $396$ $7052$ $131036$ $2470660$ $47051628$ $893856508$ $16983349692$ $322688029172$ $6131064106316$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 484 hyperelliptic curves, but it is unknown how many Jacobians of non-hyperelliptic curves it contains:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{19}$.

Endomorphism algebra over $\F_{19}$
The endomorphism algebra of this simple isogeny class is 6.0.76139264.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
3.19.a_r_acm$2$(not in LMFDB)