Properties

Label 2.59.a_eo
Base field $\F_{59}$
Dimension $2$
$p$-rank $0$
Ordinary no
Supersingular yes
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

Related objects

Downloads

Learn more

Invariants

Base field:  $\F_{59}$
Dimension:  $2$
L-polynomial:  $( 1 + 59 x^{2} )^{2}$
  $1 + 118 x^{2} + 3481 x^{4}$
Frobenius angles:  $\pm0.5$, $\pm0.5$
Angle rank:  $0$ (numerical)
Jacobians:  $132$
Cyclic group of points:    no
Non-cyclic primes:   $2, 3, 5$

This isogeny class is not simple, primitive, not ordinary, and supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

This isogeny class is supersingular.

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

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3600$ $12960000$ $42180944400$ $146661788160000$ $511116754730490000$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $60$ $3718$ $205380$ $12103438$ $714924300$ $42181355158$ $2488651484820$ $146830389134878$ $8662995818654940$ $511116756160338598$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 132 curves (of which all are hyperelliptic):

  • $y^2=x^5+58$
  • $y^2=2 x^5+57$
  • $y^2=55 x^6+10 x^5+34 x^4+32 x^3+52 x^2+14 x+31$
  • $y^2=51 x^6+20 x^5+9 x^4+5 x^3+45 x^2+28 x+3$
  • $y^2=40 x^6+52 x^5+12 x^4+48 x^3+12 x^2+52 x+40$
  • $y^2=21 x^6+45 x^5+24 x^4+37 x^3+24 x^2+45 x+21$
  • $y^2=14 x^6+26 x^5+33 x^4+11 x^3+12 x^2+54 x+24$
  • $y^2=28 x^6+52 x^5+7 x^4+22 x^3+24 x^2+49 x+48$
  • $y^2=17 x^6+57 x^5+37 x^4+37 x^3+44 x^2+51 x+41$
  • $y^2=34 x^6+55 x^5+15 x^4+15 x^3+29 x^2+43 x+23$
  • $y^2=16 x^6+3 x^5+35 x^4+58 x^3+35 x^2+3 x+16$
  • $y^2=32 x^6+6 x^5+11 x^4+57 x^3+11 x^2+6 x+32$
  • $y^2=15 x^6+51 x^5+2 x^4+20 x^3+53 x^2+17 x+8$
  • $y^2=30 x^6+43 x^5+4 x^4+40 x^3+47 x^2+34 x+16$
  • $y^2=29 x^6+11 x^5+56 x^4+39 x^3+5 x^2+24 x+34$
  • $y^2=54 x^6+12 x^5+7 x^4+14 x^2+11 x+19$
  • $y^2=45 x^6+19 x^4+19 x^2+45$
  • $y^2=31 x^6+38 x^4+38 x^2+31$
  • $y^2=45 x^6+38 x^4+17 x^2+6$
  • $y^2=16 x^6+33 x^4+7 x^2+10$
  • and 112 more

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.a 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-59}) \)$)$
Endomorphism algebra over $\overline{\F}_{59}$
The base change of $A$ to $\F_{59^{2}}$ is 1.3481.eo 2 and its endomorphism algebra is $\mathrm{M}_{2}(B)$, where $B$ is the quaternion algebra over \(\Q\) ramified at $59$ and $\infty$.

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.a_ach$3$(not in LMFDB)
2.59.a_aeo$4$(not in LMFDB)
2.59.a_a$8$(not in LMFDB)

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

TwistExtension degreeCommon base change
2.59.a_ach$3$(not in LMFDB)
2.59.a_aeo$4$(not in LMFDB)
2.59.a_a$8$(not in LMFDB)
2.59.a_ch$12$(not in LMFDB)