Properties

Label 2.64.aw_iv
Base field $\F_{2^{6}}$
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:  $\F_{2^{6}}$
Dimension:  $2$
L-polynomial:  $1 - 22 x + 229 x^{2} - 1408 x^{3} + 4096 x^{4}$
Frobenius angles:  $\pm0.0819912419852$, $\pm0.366229297515$
Angle rank:  $2$ (numerical)
Number field:  4.0.88625.1
Galois group:  $D_{4}$
Jacobians:  $60$
Isomorphism classes:  120

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $2896$ $16669376$ $68782725136$ $281419406769920$ $1152841168277570896$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $43$ $4071$ $262387$ $16773903$ $1073667003$ $68719036791$ $4398048309187$ $281475025240863$ $18014398852412683$ $1152921505371623431$

Jacobians and polarizations

This isogeny class contains the Jacobians of 60 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{2^{6}}$.

Endomorphism algebra over $\F_{2^{6}}$
The endomorphism algebra of this simple isogeny class is 4.0.88625.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.64.w_iv$2$(not in LMFDB)