Properties

Label 2.193.abw_bkt
Base field $\F_{193}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

Related objects

Downloads

Learn more

Invariants

Base field:  $\F_{193}$
Dimension:  $2$
L-polynomial:  $1 - 48 x + 955 x^{2} - 9264 x^{3} + 37249 x^{4}$
Frobenius angles:  $\pm0.0914626496846$, $\pm0.220975467824$
Angle rank:  $2$ (numerical)
Number field:  4.0.15360912.1
Galois group:  $D_{4}$
Jacobians:  $24$

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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $28893$ $1372908681$ $51676334413524$ $1925177234878552761$ $71709130057453807360773$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $146$ $36856$ $7188194$ $1387527124$ $267786025106$ $51682550223526$ $9974730381908690$ $1925122952696370148$ $371548729907588680418$ $71708904873371922778696$

Jacobians and polarizations

This isogeny class contains the Jacobians of 24 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{193}$.

Endomorphism algebra over $\F_{193}$
The endomorphism algebra of this simple isogeny class is 4.0.15360912.1.

Base change

This is a primitive isogeny class.

Twists

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

TwistExtension degreeCommon base change
2.193.bw_bkt$2$(not in LMFDB)