Properties

Label 4.3.ah_ba_aco_ey
Base field $\F_{3}$
Dimension $4$
$p$-rank $4$
Ordinary yes
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian no

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Invariants

Base field:  $\F_{3}$
Dimension:  $4$
L-polynomial:  $( 1 - 2 x + 3 x^{2} )( 1 - 5 x + 13 x^{2} - 25 x^{3} + 39 x^{4} - 45 x^{5} + 27 x^{6} )$
  $1 - 7 x + 26 x^{2} - 66 x^{3} + 128 x^{4} - 198 x^{5} + 234 x^{6} - 189 x^{7} + 81 x^{8}$
Frobenius angles:  $\pm0.0714477711956$, $\pm0.272071776080$, $\pm0.304086723985$, $\pm0.560185743604$
Angle rank:  $4$ (numerical)
Isomorphism classes:  1

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

Newton polygon

This isogeny class is ordinary.

$p$-rank:  $4$
Slopes:  $[0, 0, 0, 0, 1, 1, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $10$ $9300$ $621490$ $46500000$ $3863596550$

Point counts of the (virtual) curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $-3$ $13$ $33$ $89$ $267$ $673$ $1922$ $6417$ $20229$ $59993$

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 $\F_{3}$.

Endomorphism algebra over $\F_{3}$
The isogeny class factors as 1.3.ac $\times$ 3.3.af_n_az 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
4.3.ad_g_ao_bc$2$(not in LMFDB)
4.3.d_g_o_bc$2$(not in LMFDB)
4.3.h_ba_co_ey$2$(not in LMFDB)