Properties

Label 3.7.e_p_bm
Base field $\F_{7}$
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:  $\F_{7}$
Dimension:  $3$
L-polynomial:  $1 + 4 x + 15 x^{2} + 38 x^{3} + 105 x^{4} + 196 x^{5} + 343 x^{6}$
Frobenius angles:  $\pm0.360544620689$, $\pm0.610915698974$, $\pm0.816693384916$
Angle rank:  $3$ (numerical)
Number field:  6.0.166682304.1
Galois group:  $S_4\times C_2$
Cyclic group of points:    no
Non-cyclic primes:   $3$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $702$ $158652$ $40075074$ $14238699696$ $4689132370182$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $12$ $64$ $342$ $2468$ $16602$ $117364$ $821364$ $5774300$ $40368564$ $282403564$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 10 hyperelliptic curves, but it is unknown how many Jacobians of non-hyperelliptic curves it contains:

  • $y^2=x^8+3 x^4+3 x^3+4 x^2+3 x+1$
  • $y^2=x^8+x^5+x^4+2 x^3+6 x^2+6 x+5$
  • $y^2=x^8+x^5+x^4+5 x^3+4 x^2+4 x+6$
  • $y^2=x^8+2 x^5+x^3+4 x^2+6 x+2$
  • $y^2=x^8+2 x^5+x^3+5 x^2+1$
  • $y^2=x^8+2 x^5+x^3+5 x^2+6 x+5$
  • $y^2=x^8+x^6+2 x^4+x^3+2 x^2+3 x+6$
  • $y^2=x^8+x^6+x^5+2 x^3+4 x+6$
  • $y^2=x^8+x^6+x^5+5 x^4+6 x^3+3 x^2+6$
  • $y^2=x^8+x^6+x^5+5 x^4+6 x^3+6 x^2+3 x+2$

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{7}$.

Endomorphism algebra over $\F_{7}$
The endomorphism algebra of this simple isogeny class is 6.0.166682304.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
3.7.ae_p_abm$2$(not in LMFDB)