Properties

Label 2.53.ai_w
Base field $\F_{53}$
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:  $\F_{53}$
Dimension:  $2$
L-polynomial:  $( 1 - 14 x + 53 x^{2} )( 1 + 6 x + 53 x^{2} )$
  $1 - 8 x + 22 x^{2} - 424 x^{3} + 2809 x^{4}$
Frobenius angles:  $\pm0.0885855327829$, $\pm0.635198170427$
Angle rank:  $2$ (numerical)
Jacobians:  $162$
Cyclic group of points:    no
Non-cyclic primes:   $2, 5$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2400$ $7833600$ $21978050400$ $62245785600000$ $174898976342460000$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $46$ $2790$ $147622$ $7888718$ $418223006$ $22164143670$ $1174711575062$ $62259715297438$ $3299763611831566$ $174887470773634950$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 162 curves (of which all are hyperelliptic):

  • $y^2=18 x^6+3 x^5+24 x^4+4 x^3+47 x^2+23 x+38$
  • $y^2=30 x^6+34 x^5+47 x^4+6 x^3+29 x^2+35 x+35$
  • $y^2=28 x^6+15 x^5+39 x^4+50 x^3+43 x^2+10 x+5$
  • $y^2=27 x^6+48 x^5+40 x^4+32 x^3+23 x^2+41 x+50$
  • $y^2=48 x^6+39 x^5+46 x^4+51 x^3+24 x^2+21 x+48$
  • $y^2=39 x^6+x^5+39 x^4+9 x^3+40 x^2+37 x+50$
  • $y^2=27 x^6+44 x^5+14 x^4+18 x^3+49 x^2+40 x+4$
  • $y^2=19 x^6+51 x^5+35 x^4+30 x^3+14 x^2+46 x+32$
  • $y^2=27 x^6+24 x^5+51 x^4+19 x^3+9 x^2+46 x+3$
  • $y^2=42 x^6+9 x^5+42 x^4+45 x^3+4 x^2+9 x+3$
  • $y^2=x^6+11 x^5+2 x^4+19 x^3+31 x^2+6 x+47$
  • $y^2=34 x^6+8 x^5+48 x^4+44 x^3+13 x^2+10 x+32$
  • $y^2=18 x^6+9 x^5+36 x^4+11 x^3+52 x^2+30 x+47$
  • $y^2=46 x^6+21 x^5+51 x^4+20 x^3+39 x^2+20 x+38$
  • $y^2=31 x^6+9 x^5+52 x^4+12 x^3+13 x+52$
  • $y^2=18 x^6+47 x^5+17 x^4+29 x^3+15 x^2+25 x+43$
  • $y^2=36 x^6+36 x^5+16 x^4+39 x^3+16 x^2+36 x+36$
  • $y^2=26 x^6+5 x^5+40 x^4+32 x^3+30 x^2+48 x+32$
  • $y^2=33 x^6+51 x^5+36 x^4+41 x^3+36 x^2+38 x+52$
  • $y^2=35 x^6+17 x^5+52 x^4+22 x^3+43 x^2+37 x+40$
  • and 142 more

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{53}$.

Endomorphism algebra over $\F_{53}$
The isogeny class factors as 1.53.ao $\times$ 1.53.g 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 are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
2.53.au_hi$2$(not in LMFDB)
2.53.i_w$2$(not in LMFDB)
2.53.u_hi$2$(not in LMFDB)

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

TwistExtension degreeCommon base change
2.53.au_hi$2$(not in LMFDB)
2.53.i_w$2$(not in LMFDB)
2.53.u_hi$2$(not in LMFDB)
2.53.ak_fa$4$(not in LMFDB)
2.53.ac_de$4$(not in LMFDB)
2.53.c_de$4$(not in LMFDB)
2.53.k_fa$4$(not in LMFDB)