Properties

Label 2.59.m_fu
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:  $( 1 + 4 x + 59 x^{2} )( 1 + 8 x + 59 x^{2} )$
  $1 + 12 x + 150 x^{2} + 708 x^{3} + 3481 x^{4}$
Frobenius angles:  $\pm0.583847121874$, $\pm0.674349734762$
Angle rank:  $2$ (numerical)
Jacobians:  $72$
Cyclic group of points:    no
Non-cyclic primes:   $2$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $4352$ $12673024$ $41863598336$ $146837766799360$ $511168753690065152$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $72$ $3638$ $203832$ $12117966$ $714997032$ $42180123206$ $2488650461208$ $146830457856286$ $8662995766581768$ $511116753041169878$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 72 curves (of which all are hyperelliptic):

  • $y^2=26 x^6+23 x^5+30 x^4+29 x^3+15 x^2+x+46$
  • $y^2=19 x^6+37 x^5+40 x^4+54 x^3+40 x^2+37 x+19$
  • $y^2=55 x^6+31 x^5+37 x^4+30 x^3+10 x^2+42 x+8$
  • $y^2=25 x^6+28 x^5+6 x^4+5 x^3+6 x^2+28 x+25$
  • $y^2=18 x^6+10 x^5+11 x^4+29 x^3+29 x^2+17 x+12$
  • $y^2=15 x^6+18 x^5+6 x^4+7 x^3+6 x^2+18 x+15$
  • $y^2=31 x^6+5 x^5+21 x^4+28 x^3+21 x^2+5 x+31$
  • $y^2=34 x^6+25 x^5+16 x^4+13 x^3+16 x^2+25 x+34$
  • $y^2=28 x^6+16 x^5+27 x^4+40 x^3+27 x^2+16 x+28$
  • $y^2=2 x^5+16 x^4+54 x^3+45 x^2+49 x+22$
  • $y^2=4 x^6+x^5+42 x^4+29 x^3+42 x^2+x+4$
  • $y^2=44 x^6+51 x^5+15 x^4+25 x^3+15 x^2+51 x+44$
  • $y^2=25 x^6+48 x^5+22 x^4+19 x^3+42 x^2+40 x+52$
  • $y^2=33 x^6+13 x^5+34 x^4+45 x^3+44 x^2+33 x+43$
  • $y^2=16 x^6+13 x^5+21 x^4+29 x^3+21 x^2+13 x+16$
  • $y^2=31 x^6+52 x^5+40 x^4+8 x^3+3 x^2+52 x+20$
  • $y^2=43 x^6+17 x^5+36 x^4+10 x^3+36 x^2+17 x+43$
  • $y^2=56 x^6+33 x^5+15 x^4+45 x^3+46 x^2+24 x+33$
  • $y^2=45 x^6+43 x^5+42 x^4+27 x^3+42 x^2+43 x+45$
  • $y^2=50 x^6+13 x^5+30 x^4+11 x^3+51 x^2+30 x+3$
  • and 52 more

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{59}$
The isogeny class factors as 1.59.e $\times$ 1.59.i 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.

TwistExtension degreeCommon base change
2.59.am_fu$2$(not in LMFDB)
2.59.ae_di$2$(not in LMFDB)
2.59.e_di$2$(not in LMFDB)