Properties

Label 2.29.b_n
Base field $\F_{29}$
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:  $\F_{29}$
Dimension:  $2$
L-polynomial:  $1 + x + 13 x^{2} + 29 x^{3} + 841 x^{4}$
Frobenius angles:  $\pm0.303776799637$, $\pm0.734131802265$
Angle rank:  $2$ (numerical)
Number field:  4.0.6453917.1
Galois group:  $D_{4}$
Jacobians:  $77$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $885$ $730125$ $595991745$ $502344253125$ $420601357228800$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $31$ $867$ $24439$ $710243$ $20505986$ $594767547$ $17249872139$ $500244801763$ $14507153601691$ $420707293647702$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 77 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{29}$.

Endomorphism algebra over $\F_{29}$
The endomorphism algebra of this simple isogeny class is 4.0.6453917.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.29.ab_n$2$(not in LMFDB)