Invariants
Base field: | $\F_{3}$ |
Dimension: | $3$ |
L-polynomial: | $( 1 - 3 x + 3 x^{2} )( 1 - x - 2 x^{2} - 3 x^{3} + 9 x^{4} )$ |
$1 - 4 x + 4 x^{2} + 12 x^{4} - 36 x^{5} + 27 x^{6}$ | |
Frobenius angles: | $\pm0.0734519173280$, $\pm0.166666666667$, $\pm0.740118583995$ |
Angle rank: | $1$ (numerical) |
Jacobians: | $1$ |
Isomorphism classes: | 4 |
This isogeny class is not simple, primitive, not ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.
Newton polygon
$p$-rank: | $2$ |
Slopes: | $[0, 0, 1/2, 1/2, 1, 1]$ |
Point counts
Point counts of the abelian variety
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $4$ | $336$ | $11200$ | $646464$ | $14147284$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $0$ | $2$ | $12$ | $98$ | $240$ | $764$ | $2352$ | $6530$ | $19956$ | $59282$ |
Jacobians and polarizations
This isogeny class contains the Jacobian of 1 curve (which is not hyperelliptic), and hence is principally polarizable:
- $x^4+2x^3z+x^2y^2+x^2z^2+xy^2z+2y^4+y^3z+z^4=0$
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{3^{6}}$.
Endomorphism algebra over $\F_{3}$The isogeny class factors as 1.3.ad $\times$ 2.3.ab_ac and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
The base change of $A$ to $\F_{3^{6}}$ is 1.729.ak 2 $\times$ 1.729.cc. The endomorphism algebra for each factor is:
|
- Endomorphism algebra over $\F_{3^{2}}$
The base change of $A$ to $\F_{3^{2}}$ is 1.9.ad $\times$ 2.9.af_q. The endomorphism algebra for each factor is: - Endomorphism algebra over $\F_{3^{3}}$
The base change of $A$ to $\F_{3^{3}}$ is 1.27.ai 2 $\times$ 1.27.a. The endomorphism algebra for each factor is: - 1.27.ai 2 : $\mathrm{M}_{2}($\(\Q(\sqrt{-11}) \)$)$
- 1.27.a : \(\Q(\sqrt{-3}) \).
Base change
This is a primitive isogeny class.