Properties

Label 2.59.ad_k
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:  $( 1 - 12 x + 59 x^{2} )( 1 + 9 x + 59 x^{2} )$
  $1 - 3 x + 10 x^{2} - 177 x^{3} + 3481 x^{4}$
Frobenius angles:  $\pm0.214641822575$, $\pm0.699239268689$
Angle rank:  $2$ (numerical)
Jacobians:  $312$
Cyclic group of points:    no
Non-cyclic primes:   $2, 3$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3312$ $12161664$ $42084484416$ $146974439139840$ $511154436278841552$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $57$ $3493$ $204912$ $12129241$ $714977007$ $42180451846$ $2488654444053$ $146830415278321$ $8662995524133648$ $511116753448853653$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 312 curves (of which all are hyperelliptic):

  • $y^2=45 x^6+53 x^5+46 x^4+36 x^3+3 x^2+39 x+34$
  • $y^2=12 x^6+41 x^5+58 x^4+21 x^3+33 x^2+21 x+42$
  • $y^2=44 x^6+40 x^5+25 x^4+7 x^3+35 x^2+26 x+9$
  • $y^2=8 x^6+44 x^5+11 x^4+41 x^3+9 x^2+56 x+3$
  • $y^2=23 x^6+13 x^5+45 x^4+18 x^3+2 x^2+35 x+3$
  • $y^2=18 x^6+37 x^4+7 x^3+40 x^2+10 x+38$
  • $y^2=36 x^6+22 x^5+7 x^4+19 x^3+23 x^2+33 x+32$
  • $y^2=19 x^6+55 x^5+36 x^4+43 x^3+3 x^2+26 x$
  • $y^2=35 x^6+34 x^5+16 x^4+35 x^3+13 x^2+20 x+16$
  • $y^2=20 x^6+17 x^5+44 x^4+54 x^3+30 x^2+15 x$
  • $y^2=23 x^6+44 x^5+14 x^4+x^3+31 x^2+x+8$
  • $y^2=25 x^6+35 x^5+56 x^4+10 x^3+26 x^2+56 x+27$
  • $y^2=24 x^6+47 x^5+42 x^4+45 x^3+54 x+4$
  • $y^2=24 x^6+23 x^5+50 x^4+12 x^3+21 x^2+37 x+47$
  • $y^2=3 x^6+29 x^5+36 x^4+22 x^3+22 x^2+17 x+11$
  • $y^2=50 x^6+58 x^5+30 x^4+42 x^3+21 x^2+4 x+14$
  • $y^2=58 x^6+4 x^5+35 x^3+37 x^2+51 x+22$
  • $y^2=33 x^6+32 x^5+19 x^4+37 x^3+8 x^2+39 x+5$
  • $y^2=48 x^6+41 x^5+58 x^4+28 x^3+30 x^2+10 x+6$
  • $y^2=20 x^6+43 x^5+27 x^3+38 x^2+23 x+35$
  • and 292 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.am $\times$ 1.59.j 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.av_is$2$(not in LMFDB)
2.59.d_k$2$(not in LMFDB)
2.59.v_is$2$(not in LMFDB)