Properties

Label 2.59.a_cs
Base field $\F_{59}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
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:  $1 + 70 x^{2} + 3481 x^{4}$
Frobenius angles:  $\pm0.351071855047$, $\pm0.648928144953$
Angle rank:  $1$ (numerical)
Number field:  \(\Q(\sqrt{3}, \sqrt{-47})\)
Galois group:  $C_2^2$
Jacobians:  $452$
Cyclic group of points:    no
Non-cyclic primes:   $2$

This isogeny class is simple but not geometrically 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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3552$ $12616704$ $42180145632$ $146880438091776$ $511116753252502752$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $60$ $3622$ $205380$ $12121486$ $714924300$ $42179757622$ $2488651484820$ $146830477570078$ $8662995818654940$ $511116753204364102$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 452 curves (of which all are hyperelliptic):

  • $y^2=45 x^6+39 x^5+21 x^4+57 x^3+58 x^2+33 x+52$
  • $y^2=30 x^6+22 x^5+x^4+51 x^3+54 x^2+52 x+43$
  • $y^2=x^6+44 x^5+2 x^4+43 x^3+49 x^2+45 x+27$
  • $y^2=6 x^6+7 x^5+24 x^4+14 x^3+2 x^2+43 x+27$
  • $y^2=12 x^6+14 x^5+48 x^4+28 x^3+4 x^2+27 x+54$
  • $y^2=30 x^6+13 x^5+33 x^4+15 x^3+54 x^2+50 x+9$
  • $y^2=20 x^6+47 x^5+16 x^4+58 x^3+19 x^2+51 x+18$
  • $y^2=40 x^6+35 x^5+32 x^4+57 x^3+38 x^2+43 x+36$
  • $y^2=36 x^6+41 x^5+14 x^4+51 x^3+47 x^2+35 x+21$
  • $y^2=13 x^6+23 x^5+28 x^4+43 x^3+35 x^2+11 x+42$
  • $y^2=27 x^6+10 x^5+19 x^4+6 x^3+35 x^2+51 x+45$
  • $y^2=54 x^6+20 x^5+38 x^4+12 x^3+11 x^2+43 x+31$
  • $y^2=32 x^6+56 x^5+30 x^4+14 x^3+27 x^2+50 x+13$
  • $y^2=5 x^6+53 x^5+x^4+28 x^3+54 x^2+41 x+26$
  • $y^2=18 x^6+39 x^5+2 x^4+25 x^3+58 x^2+12 x+22$
  • $y^2=36 x^6+19 x^5+4 x^4+50 x^3+57 x^2+24 x+44$
  • $y^2=x^6+25 x^5+51 x^4+38 x^3+44 x^2+10 x+9$
  • $y^2=2 x^6+50 x^5+43 x^4+17 x^3+29 x^2+20 x+18$
  • $y^2=14 x^6+31 x^5+32 x^4+x^3+43 x^2+14 x+12$
  • $y^2=28 x^6+3 x^5+5 x^4+2 x^3+27 x^2+28 x+24$
  • and 432 more

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{59}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{3}, \sqrt{-47})\).
Endomorphism algebra over $\overline{\F}_{59}$
The base change of $A$ to $\F_{59^{2}}$ is 1.3481.cs 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-141}) \)$)$

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.59.a_acs$4$(not in LMFDB)
2.59.am_ed$12$(not in LMFDB)
2.59.m_ed$12$(not in LMFDB)