Properties

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

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Invariants

Base field:  $\F_{59}$
Dimension:  $2$
L-polynomial:  $1 + 12 x + 133 x^{2} + 708 x^{3} + 3481 x^{4}$
Frobenius angles:  $\pm0.529411158564$, $\pm0.741891606041$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-179 +12 \sqrt{21}})\)
Galois group:  $D_{4}$
Jacobians:  $156$
Cyclic group of points:    yes

This isogeny class is simple and 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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $4335$ $12549825$ $41988879360$ $146835675812025$ $511110414002270175$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $72$ $3604$ $204444$ $12117796$ $714915432$ $42180820342$ $2488652174808$ $146830395961156$ $8662996054490436$ $511116754522642324$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 156 curves (of which all are hyperelliptic):

  • $y^2=2 x^6+22 x^5+18 x^4+28 x^3+23 x^2+31 x+43$
  • $y^2=15 x^6+7 x^5+44 x^4+3 x^3+17 x^2+2 x+33$
  • $y^2=53 x^6+48 x^5+5 x^4+4 x^3+19 x^2+45 x+19$
  • $y^2=7 x^6+55 x^5+52 x^4+7 x^3+39 x^2+57 x+8$
  • $y^2=15 x^6+18 x^5+16 x^4+40 x^3+7 x^2+26 x+4$
  • $y^2=54 x^6+55 x^5+11 x^4+48 x^3+48 x^2+21 x+30$
  • $y^2=37 x^6+34 x^5+34 x^4+40 x^3+57 x^2+36 x+52$
  • $y^2=22 x^6+36 x^5+16 x^4+29 x^3+39 x^2+58 x+33$
  • $y^2=3 x^6+34 x^5+16 x^4+50 x^3+21 x^2+26 x+20$
  • $y^2=52 x^6+39 x^5+20 x^4+42 x^3+37 x^2+x+33$
  • $y^2=6 x^6+26 x^5+13 x^4+17 x^3+14 x^2+4 x+16$
  • $y^2=26 x^6+8 x^5+32 x^4+26 x^3+11 x^2+19 x+31$
  • $y^2=31 x^6+55 x^5+10 x^4+36 x^3+42 x^2+42 x+45$
  • $y^2=29 x^6+39 x^5+26 x^4+35 x^3+34 x^2+42 x+57$
  • $y^2=18 x^6+12 x^5+5 x^4+35 x^3+46 x^2+53 x+24$
  • $y^2=26 x^6+41 x^5+58 x^4+16 x^3+51 x^2+46 x+8$
  • $y^2=41 x^6+22 x^5+38 x^4+42 x^3+24 x^2+25 x+36$
  • $y^2=4 x^6+52 x^5+54 x^4+30 x^3+29 x^2+34 x+7$
  • $y^2=7 x^6+30 x^5+27 x^4+40 x^3+48 x^2+52 x+9$
  • $y^2=8 x^6+13 x^5+20 x^4+39 x^3+12 x^2+19 x+33$
  • and 136 more

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{59}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-179 +12 \sqrt{21}})\).

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_fd$2$(not in LMFDB)