Properties

Label 3.8.ak_cb_ahc
Base field $\F_{2^{3}}$
Dimension $3$
$p$-rank $2$
Ordinary no
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian no

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Invariants

Base field:  $\F_{2^{3}}$
Dimension:  $3$
L-polynomial:  $( 1 - 3 x + 8 x^{2} )( 1 - 7 x + 24 x^{2} - 56 x^{3} + 64 x^{4} )$
  $1 - 10 x + 53 x^{2} - 184 x^{3} + 424 x^{4} - 640 x^{5} + 512 x^{6}$
Frobenius angles:  $\pm0.0585111942353$, $\pm0.322067999368$, $\pm0.418160225599$
Angle rank:  $3$ (numerical)

This isogeny class is not simple, primitive, not ordinary, and not supersingular. It is principally polarizable.

Newton polygon

$p$-rank:  $2$
Slopes:  $[0, 0, 1/2, 1/2, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $156$ $284544$ $144165996$ $67367499264$ $34451442174396$

Point counts of the (virtual) curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $-1$ $71$ $551$ $4015$ $32079$ $260711$ $2097143$ $16782175$ $134224607$ $1073754391$

Jacobians and polarizations

This isogeny class is principally polarizable, but does not contain a Jacobian.

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{2^{3}}$.

Endomorphism algebra over $\F_{2^{3}}$
The isogeny class factors as 1.8.ad $\times$ 2.8.ah_y and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
3.8.ae_l_abo$2$(not in LMFDB)
3.8.e_l_bo$2$(not in LMFDB)
3.8.k_cb_hc$2$(not in LMFDB)