Invariants
Base field: | $\F_{5^{4}}$ |
Dimension: | $2$ |
L-polynomial: | $( 1 - 49 x + 625 x^{2} )( 1 - 43 x + 625 x^{2} )$ |
$1 - 92 x + 3357 x^{2} - 57500 x^{3} + 390625 x^{4}$ | |
Frobenius angles: | $\pm0.0637685608585$, $\pm0.170463428383$ |
Angle rank: | $2$ (numerical) |
This isogeny class is not simple, primitive, ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.
Newton polygon
This isogeny class is ordinary.
$p$-rank: | $2$ |
Slopes: | $[0, 0, 1, 1]$ |
Point counts
Point counts of the abelian variety
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $336391$ | $151905765825$ | $59598625703581888$ | $23283045886763785505625$ | $9094947679704005460682452991$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $534$ | $388876$ | $244115970$ | $152587769524$ | $95367438581934$ | $59604645086404126$ | $37252902992598296670$ | $23283064365523403605924$ | $14551915228367790153420834$ | $9094947017729247987397006876$ |
Jacobians and polarizations
This isogeny class contains a Jacobian, and hence is principally polarizable.
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{5^{4}}$.
Endomorphism algebra over $\F_{5^{4}}$The isogeny class factors as 1.625.abx $\times$ 1.625.abr 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.
Twist | Extension degree | Common base change |
---|---|---|
2.625.ag_abgz | $2$ | (not in LMFDB) |
2.625.g_abgz | $2$ | (not in LMFDB) |
2.625.do_ezd | $2$ | (not in LMFDB) |