Properties

Label 3.19.ai_cb_ajg
Base field $\F_{19}$
Dimension $3$
$p$-rank $3$
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:  $\F_{19}$
Dimension:  $3$
L-polynomial:  $1 - 8 x + 53 x^{2} - 240 x^{3} + 1007 x^{4} - 2888 x^{5} + 6859 x^{6}$
Frobenius angles:  $\pm0.179864958699$, $\pm0.377052742415$, $\pm0.598191908174$
Angle rank:  $3$ (numerical)
Number field:  6.0.1285433792.1
Galois group:  $S_4\times C_2$
Cyclic group of points:    no
Non-cyclic primes:   $2$

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:  $3$
Slopes:  $[0, 0, 0, 1, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $4784$ $52891904$ $324575795024$ $2216781784875008$ $15200694324110722544$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $12$ $404$ $6900$ $130524$ $2479292$ $47046068$ $893888420$ $16984076732$ $322688062572$ $6131053599444$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 160 hyperelliptic curves, but it is unknown how many Jacobians of non-hyperelliptic curves it contains:

  • $y^2=x^7+6 x^6+17 x^5+13 x^4+3 x^3+13 x^2+12 x$
  • $y^2=18 x^8+16 x^7+14 x^6+10 x^5+14 x^4+3 x^3+13 x^2+14 x+3$
  • $y^2=18 x^8+11 x^7+18 x^6+15 x^5+x^4+x^3+9 x^2+17 x+1$
  • $y^2=x^8+9 x^7+10 x^6+4 x^5+9 x^4+14 x^3+18 x^2+6 x+3$
  • $y^2=18 x^8+8 x^7+3 x^6+13 x^5+3 x^4+8 x^3+6 x^2+14$
  • $y^2=x^7+8 x^6+15 x^5+7 x^4+7 x^3+3 x^2+11 x+13$
  • $y^2=18 x^8+18 x^7+8 x^6+15 x^5+11 x^4+18 x^3+x^2+2$
  • $y^2=x^8+16 x^7+3 x^6+17 x^5+18 x^3+11 x^2+10 x+3$
  • $y^2=18 x^8+12 x^7+8 x^6+11 x^5+17 x^4+16 x^3+6 x^2+x+8$
  • $y^2=x^8+2 x^7+13 x^6+5 x^5+11 x^4+9 x^3+16 x+12$
  • $y^2=18 x^8+10 x^7+11 x^6+9 x^5+9 x^4+15 x^2+2 x+2$
  • $y^2=18 x^8+x^7+18 x^6+4 x^5+x^4+13 x^3+x^2+9 x+10$
  • $y^2=x^8+14 x^7+14 x^6+11 x^4+6 x^3+7 x^2+13 x+10$
  • $y^2=18 x^8+7 x^7+x^6+9 x^5+2 x^4+15 x^3+5 x^2+6 x+2$
  • $y^2=18 x^8+16 x^7+10 x^6+9 x^5+6 x^4+8 x^3+16 x^2+13 x+13$
  • $y^2=x^8+x^7+10 x^6+14 x^5+6 x^4+x^3+14 x^2+4$
  • $y^2=18 x^8+6 x^7+4 x^6+13 x^5+6 x^4+8 x^2+5 x+2$
  • $y^2=18 x^8+8 x^7+15 x^6+8 x^4+13 x^3+8 x^2+13 x+15$
  • $y^2=18 x^7+17 x^6+16 x^5+2 x^4+8 x^3+3 x^2+12 x+13$
  • $y^2=18 x^8+3 x^7+5 x^6+10 x^5+2 x^4+10 x^3+11 x^2+3 x+7$
  • and 140 more

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{19}$.

Endomorphism algebra over $\F_{19}$
The endomorphism algebra of this simple isogeny class is 6.0.1285433792.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
3.19.i_cb_jg$2$(not in LMFDB)