Properties

Label 2.67.aq_go
Base field $\F_{67}$
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:  $\F_{67}$
Dimension:  $2$
L-polynomial:  $1 - 16 x + 170 x^{2} - 1072 x^{3} + 4489 x^{4}$
Frobenius angles:  $\pm0.198429198698$, $\pm0.447093057593$
Angle rank:  $2$ (numerical)
Number field:  4.0.291648.2
Galois group:  $D_{4}$
Jacobians:  $124$
Isomorphism classes:  156
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:  $2$
Slopes:  $[0, 0, 1, 1]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $3572$ $20531856$ $90714201236$ $406069521186816$ $1822863704064236852$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $52$ $4574$ $301612$ $20151214$ $1350144292$ $90459205454$ $6060717808540$ $406067657002078$ $27206533809318676$ $1822837801608542654$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 124 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{67}$.

Endomorphism algebra over $\F_{67}$
The endomorphism algebra of this simple isogeny class is 4.0.291648.2.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.67.q_go$2$(not in LMFDB)