Properties

Label 2.47.ag_dq
Base field $\F_{47}$
Dimension $2$
$p$-rank $1$
Ordinary no
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{47}$
Dimension:  $2$
L-polynomial:  $( 1 - 6 x + 47 x^{2} )( 1 + 47 x^{2} )$
  $1 - 6 x + 94 x^{2} - 282 x^{3} + 2209 x^{4}$
Frobenius angles:  $\pm0.355830380849$, $\pm0.5$
Angle rank:  $1$ (numerical)
Jacobians:  $180$
Cyclic group of points:    no
Non-cyclic primes:   $2, 3$

This isogeny class is not simple, primitive, not ordinary, and not supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

$p$-rank:  $1$
Slopes:  $[0, 1/2, 1/2, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2016$ $5225472$ $10844832096$ $23794876514304$ $52593792166663776$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $42$ $2362$ $104454$ $4876318$ $229321722$ $10779233722$ $506623079382$ $23811285550846$ $1119130526924298$ $52599132610972282$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 180 curves (of which all are hyperelliptic):

  • $y^2=37 x^6+44 x^5+3 x^4+32 x^3+44 x^2+13 x+22$
  • $y^2=3 x^5+32 x^4+44 x^3+15 x^2+33 x+34$
  • $y^2=32 x^6+12 x^5+42 x^4+39 x^3+10 x^2+3 x+7$
  • $y^2=4 x^6+13 x^5+3 x^4+6 x^3+43 x^2+11 x+15$
  • $y^2=13 x^6+4 x^5+10 x^4+46 x^3+42 x^2+38 x+26$
  • $y^2=15 x^6+42 x^5+29 x^4+44 x^3+35 x^2+3 x+41$
  • $y^2=8 x^6+41 x^5+40 x^4+17 x^3+40 x^2+41 x+8$
  • $y^2=25 x^6+11 x^5+24 x^4+45 x^3+21 x^2+16 x+34$
  • $y^2=29 x^6+4 x^5+13 x^4+4 x^3+9 x^2+4 x+41$
  • $y^2=44 x^6+22 x^5+30 x^4+16 x^3+5 x^2+45 x+15$
  • $y^2=43 x^6+35 x^5+18 x^4+34 x^3+18 x^2+35 x+43$
  • $y^2=39 x^6+8 x^5+44 x^4+17 x^3+13 x^2+43 x+33$
  • $y^2=39 x^6+11 x^5+5 x^4+8 x^3+35 x^2+22 x+29$
  • $y^2=36 x^6+46 x^5+19 x^4+45 x^3+19 x^2+46 x+36$
  • $y^2=45 x^6+14 x^5+16 x^4+8 x^3+3 x^2+8 x+39$
  • $y^2=9 x^6+4 x^5+15 x^4+44 x^3+23 x^2+14 x+6$
  • $y^2=11 x^6+28 x^5+36 x^4+28 x^3+36 x^2+28 x+11$
  • $y^2=11 x^6+13 x^5+22 x^4+24 x^3+39 x^2+36 x+8$
  • $y^2=9 x^6+28 x^5+30 x^4+6 x^3+22 x^2+9 x+32$
  • $y^2=x^6+42 x^5+35 x^4+12 x^3+35 x^2+42 x+1$
  • and 160 more

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{47^{2}}$.

Endomorphism algebra over $\F_{47}$
The isogeny class factors as 1.47.ag $\times$ 1.47.a and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:
Endomorphism algebra over $\overline{\F}_{47}$
The base change of $A$ to $\F_{47^{2}}$ is 1.2209.cg $\times$ 1.2209.dq. 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
2.47.g_dq$2$(not in LMFDB)