Properties

Label 2.47.ag_dw
Base field $\F_{47}$
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:  $\F_{47}$
Dimension:  $2$
L-polynomial:  $1 - 6 x + 100 x^{2} - 282 x^{3} + 2209 x^{4}$
Frobenius angles:  $\pm0.387838122247$, $\pm0.470522273339$
Angle rank:  $2$ (numerical)
Number field:  \(\Q(\sqrt{-176 -6 \sqrt{3}})\)
Galois group:  $D_{4}$
Jacobians:  $54$
Isomorphism classes:  54
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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2022$ $5253156$ $10856144286$ $23787740239056$ $52589210255711502$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $42$ $2374$ $104562$ $4874854$ $229301742$ $10779284374$ $506624869590$ $23811288716158$ $1119130425561546$ $52599132085878454$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 54 curves (of which all are hyperelliptic):

  • $y^2=29 x^6+45 x^5+4 x^4+4 x^3+16 x^2+39 x+22$
  • $y^2=41 x^6+40 x^5+2 x^4+43 x^3+25 x^2+7 x+23$
  • $y^2=10 x^6+25 x^5+41 x^4+16 x^3+13 x^2+26 x+36$
  • $y^2=26 x^6+44 x^5+8 x^4+42 x^3+38 x+23$
  • $y^2=8 x^6+39 x^5+41 x^4+37 x^3+14 x^2+19 x+11$
  • $y^2=14 x^6+10 x^5+32 x^4+5 x^3+12 x^2+42 x+10$
  • $y^2=43 x^6+38 x^5+11 x^4+46 x^3+33 x^2+36 x+13$
  • $y^2=28 x^6+32 x^5+34 x^4+41 x^3+17 x^2+11 x+26$
  • $y^2=38 x^6+14 x^5+33 x^4+37 x^3+37 x^2+44 x+31$
  • $y^2=39 x^6+28 x^5+43 x^4+26 x^3+24 x^2+31 x+23$
  • $y^2=41 x^6+17 x^5+25 x^4+25 x^3+32 x^2+29 x+18$
  • $y^2=40 x^6+29 x^5+27 x^4+19 x^3+43 x^2+27 x+23$
  • $y^2=39 x^6+17 x^5+15 x^4+11 x^3+37 x^2+43 x+6$
  • $y^2=29 x^6+46 x^5+10 x^4+12 x^3+38 x^2+3 x+23$
  • $y^2=12 x^6+41 x^5+33 x^4+23 x^3+8 x^2+39 x+35$
  • $y^2=2 x^6+36 x^5+7 x^4+8 x^3+24 x^2+46 x+22$
  • $y^2=24 x^6+19 x^5+29 x^4+31 x^3+33 x^2+27 x+35$
  • $y^2=23 x^6+29 x^5+43 x^4+31 x^3+35 x^2+33 x+35$
  • $y^2=42 x^6+x^5+12 x^4+33 x^3+4 x+4$
  • $y^2=38 x^6+33 x^5+6 x^4+39 x^3+14 x^2+31 x+10$
  • and 34 more

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{47}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-176 -6 \sqrt{3}})\).

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_dw$2$(not in LMFDB)