# Properties

 Label 4.3.ah_ba_acp_fc Base Field $\F_{3}$ Dimension $4$ Ordinary No $p$-rank $3$ Principally polarizable Yes Contains a Jacobian No

## Invariants

 Base field: $\F_{3}$ Dimension: $4$ L-polynomial: $( 1 - 3 x + 3 x^{2} )( 1 - 4 x + 11 x^{2} - 22 x^{3} + 33 x^{4} - 36 x^{5} + 27 x^{6} )$ Frobenius angles: $\pm0.132091637252$, $\pm0.166666666667$, $\pm0.376445424065$, $\pm0.544359499442$ Angle rank: $3$ (numerical)

This isogeny class is not simple.

## Newton polygon

 $p$-rank: $3$ Slopes: $[0, 0, 0, 1/2, 1/2, 1, 1, 1]$

## Point counts

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

 $r$ 1 2 3 4 5 6 7 8 9 10 $A(\F_{q^r})$ 10 9380 616840 41459600 3983713550 321699331520 24298968752110 1948662891884800 154713550731961480 12105231000843656900

 $r$ 1 2 3 4 5 6 7 8 9 10 $C(\F_{q^r})$ -3 13 30 77 277 826 2321 6893 20280 58793

## Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{3}$
 The isogeny class factors as 1.3.ad $\times$ 3.3.ae_l_aw and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:
Endomorphism algebra over $\overline{\F}_{3}$
 The base change of $A$ to $\F_{3^{6}}$ is 1.729.cc $\times$ 3.729.bq_bex_fga. The endomorphism algebra for each factor is: 1.729.cc : the quaternion algebra over $$\Q$$ ramified at $3$ and $\infty$. 3.729.bq_bex_fga : 6.0.5169344.1.
All geometric endomorphisms are defined over $\F_{3^{6}}$.
Remainder of endomorphism lattice by field
• Endomorphism algebra over $\F_{3^{2}}$  The base change of $A$ to $\F_{3^{2}}$ is 1.9.ad $\times$ 3.9.g_l_i. 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.a $\times$ 3.27.c_x_ji. The endomorphism algebra for each factor is:

## Base change

This is a primitive isogeny class.

## Twists

Below are some of the twists of this isogeny class.
 Twist Extension Degree Common base change 4.3.b_c_b_a $2$ (not in LMFDB) 4.3.h_ba_cp_fc $2$ (not in LMFDB) 4.3.ae_o_abi_co $3$ (not in LMFDB) 4.3.ab_c_ab_a $3$ (not in LMFDB)
Below is a list of all twists of this isogeny class.
 Twist Extension Degree Common base change 4.3.b_c_b_a $2$ (not in LMFDB) 4.3.h_ba_cp_fc $2$ (not in LMFDB) 4.3.ae_o_abi_co $3$ (not in LMFDB) 4.3.ab_c_ab_a $3$ (not in LMFDB) 4.3.ae_o_abi_co $6$ (not in LMFDB) 4.3.e_o_bi_co $6$ (not in LMFDB)