Invariants
Base field: | $\F_{2}$ |
Dimension: | $5$ |
L-polynomial: | $( 1 - 2 x + 2 x^{2} )( 1 - 4 x + 4 x^{2} + 7 x^{3} - 21 x^{4} + 14 x^{5} + 16 x^{6} - 32 x^{7} + 16 x^{8} )$ |
$1 - 6 x + 14 x^{2} - 9 x^{3} - 27 x^{4} + 70 x^{5} - 54 x^{6} - 36 x^{7} + 112 x^{8} - 96 x^{9} + 32 x^{10}$ | |
Frobenius angles: | $\pm0.0764513550391$, $\pm0.143118021706$, $\pm0.250000000000$, $\pm0.323548644961$, $\pm0.943118021706$ |
Angle rank: | $1$ (numerical) |
Jacobians: | $0$ |
Isomorphism classes: | 1 |
This isogeny class is not simple, primitive, not ordinary, and not supersingular. It is principally polarizable.
Newton polygon
$p$-rank: | $4$ |
Slopes: | $[0, 0, 0, 0, 1/2, 1/2, 1, 1, 1, 1]$ |
Point counts
Point counts of the abelian variety
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $1$ | $155$ | $97123$ | $1395775$ | $55074521$ |
Point counts of the (virtual) curve
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $-3$ | $-3$ | $18$ | $21$ | $47$ | $54$ | $130$ | $269$ | $576$ | $1147$ |
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 $\F_{2^{60}}$.
Endomorphism algebra over $\F_{2}$The isogeny class factors as 1.2.ac $\times$ 4.2.ae_e_h_av 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 $\F_{2^{60}}$ is 1.1152921504606846976.bwvqqfv 4 $\times$ 1.1152921504606846976.gytisyy. The endomorphism algebra for each factor is:
|
- Endomorphism algebra over $\F_{2^{2}}$
The base change of $A$ to $\F_{2^{2}}$ is 1.4.a $\times$ 4.4.ai_be_acv_ft. The endomorphism algebra for each factor is: - Endomorphism algebra over $\F_{2^{3}}$
The base change of $A$ to $\F_{2^{3}}$ is 1.8.e $\times$ 4.8.f_h_z_ez. The endomorphism algebra for each factor is: - Endomorphism algebra over $\F_{2^{4}}$
The base change of $A$ to $\F_{2^{4}}$ is 1.16.i $\times$ 4.16.ae_be_adx_ban. The endomorphism algebra for each factor is: - 1.16.i : the quaternion algebra over \(\Q\) ramified at $2$ and $\infty$.
- 4.16.ae_be_adx_ban : \(\Q(\zeta_{15})\).
- Endomorphism algebra over $\F_{2^{5}}$
The base change of $A$ to $\F_{2^{5}}$ is 1.32.i $\times$ 2.32.d_bj 2 . The endomorphism algebra for each factor is: - 1.32.i : \(\Q(\sqrt{-1}) \).
- 2.32.d_bj 2 : $\mathrm{M}_{2}($\(\Q(\sqrt{-3}, \sqrt{5})\)$)$
- Endomorphism algebra over $\F_{2^{6}}$
The base change of $A$ to $\F_{2^{6}}$ is 1.64.a $\times$ 4.64.al_cf_cz_agqx. The endomorphism algebra for each factor is: - Endomorphism algebra over $\F_{2^{10}}$
The base change of $A$ to $\F_{2^{10}}$ is 1.1024.a $\times$ 2.1024.cj_dzt 2 . The endomorphism algebra for each factor is: - 1.1024.a : \(\Q(\sqrt{-1}) \).
- 2.1024.cj_dzt 2 : $\mathrm{M}_{2}($\(\Q(\sqrt{-3}, \sqrt{5})\)$)$
- Endomorphism algebra over $\F_{2^{12}}$
The base change of $A$ to $\F_{2^{12}}$ is 1.4096.ey $\times$ 4.4096.ah_afzr_dgij_bjklft. The endomorphism algebra for each factor is: - 1.4096.ey : the quaternion algebra over \(\Q\) ramified at $2$ and $\infty$.
- 4.4096.ah_afzr_dgij_bjklft : \(\Q(\zeta_{15})\).
- Endomorphism algebra over $\F_{2^{15}}$
The base change of $A$ to $\F_{2^{15}}$ is 1.32768.ajw $\times$ 2.32768.a_acgor 2 . The endomorphism algebra for each factor is: - 1.32768.ajw : \(\Q(\sqrt{-1}) \).
- 2.32768.a_acgor 2 : $\mathrm{M}_{2}($\(\Q(\sqrt{-3}, \sqrt{5})\)$)$
- Endomorphism algebra over $\F_{2^{20}}$
The base change of $A$ to $\F_{2^{20}}$ is 1.1048576.dau $\times$ 2.1048576.cmj_dvphh 2 . The endomorphism algebra for each factor is: - 1.1048576.dau : the quaternion algebra over \(\Q\) ramified at $2$ and $\infty$.
- 2.1048576.cmj_dvphh 2 : $\mathrm{M}_{2}($\(\Q(\sqrt{-3}, \sqrt{5})\)$)$
- Endomorphism algebra over $\F_{2^{30}}$
The base change of $A$ to $\F_{2^{30}}$ is 1.1073741824.acgor 4 $\times$ 1.1073741824.a. The endomorphism algebra for each factor is: - 1.1073741824.acgor 4 : $\mathrm{M}_{4}($\(\Q(\sqrt{-15}) \)$)$
- 1.1073741824.a : \(\Q(\sqrt{-1}) \).
Base change
This is a primitive isogeny class.