Properties

Label 2.59.a_s
Base field $\F_{59}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{59}$
Dimension:  $2$
L-polynomial:  $( 1 - 10 x + 59 x^{2} )( 1 + 10 x + 59 x^{2} )$
  $1 + 18 x^{2} + 3481 x^{4}$
Frobenius angles:  $\pm0.274373026800$, $\pm0.725626973200$
Angle rank:  $1$ (numerical)
Jacobians:  $256$
Cyclic group of points:    no
Non-cyclic primes:   $2, 5$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3500$ $12250000$ $42180351500$ $146991376000000$ $511116754291587500$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $60$ $3518$ $205380$ $12130638$ $714924300$ $42180169358$ $2488651484820$ $146830397947678$ $8662995818654940$ $511116755282533598$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 256 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{59^{2}}$.

Endomorphism algebra over $\F_{59}$
The isogeny class factors as 1.59.ak $\times$ 1.59.k 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 $\overline{\F}_{59}$
The base change of $A$ to $\F_{59^{2}}$ is 1.3481.s 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-34}) \)$)$

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
2.59.au_ik$2$(not in LMFDB)
2.59.u_ik$2$(not in LMFDB)
2.59.a_as$4$(not in LMFDB)

Below is a list of all twists of this isogeny class.

TwistExtension degreeCommon base change
2.59.au_ik$2$(not in LMFDB)
2.59.u_ik$2$(not in LMFDB)
2.59.a_as$4$(not in LMFDB)
2.59.ak_bp$6$(not in LMFDB)
2.59.k_bp$6$(not in LMFDB)