Properties

Label 2.97.aq_hy
Base field $\F_{97}$
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:  $\F_{97}$
Dimension:  $2$
L-polynomial:  $1 - 16 x + 206 x^{2} - 1552 x^{3} + 9409 x^{4}$
Frobenius angles:  $\pm0.219142940476$, $\pm0.487248214836$
Angle rank:  $2$ (numerical)
Number field:  4.0.40053.1
Galois group:  $D_{4}$
Jacobians:  $412$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $8048$ $90008832$ $834010835696$ $7837331107958784$ $73743616164352863728$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $82$ $9566$ $913810$ $88528126$ $8587480402$ $832974780638$ $80798287537042$ $7837433299904254$ $760231056302146642$ $73742412691146326366$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 412 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{97}$.

Endomorphism algebra over $\F_{97}$
The endomorphism algebra of this simple isogeny class is 4.0.40053.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.97.q_hy$2$(not in LMFDB)