Properties

Label 1.467.a
Base field $\F_{467}$
Dimension $1$
$p$-rank $0$
Ordinary no
Supersingular yes
Simple yes
Geometrically simple yes
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{467}$
Dimension:  $1$
L-polynomial:  $1 + 467 x^{2}$
Frobenius angles:  $\pm0.5$
Angle rank:  $0$ (numerical)
Number field:  \(\Q(\sqrt{-467}) \)
Galois group:  $C_2$
Jacobians:  $28$

This isogeny class is simple and geometrically simple, primitive, not ordinary, and supersingular. It is principally polarizable and contains a Jacobian.

Newton polygon

This isogeny class is supersingular.

$p$-rank:  $0$
Slopes:  $[1/2, 1/2]$

Point counts

Point counts of the abelian variety

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $468$ $219024$ $101847564$ $47562375744$ $22211833167108$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $468$ $219024$ $101847564$ $47562375744$ $22211833167108$ $10372926292734096$ $4844156483581198524$ $2262221077737294086400$ $1056457243347740004682548$ $493365532643439005853083664$

Jacobians and polarizations

This isogeny class contains the Jacobians of 28 curves (of which all are hyperelliptic), and hence is principally polarizable:

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{467^{2}}$.

Endomorphism algebra over $\F_{467}$
The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-467}) \).
Endomorphism algebra over $\overline{\F}_{467}$
The base change of $A$ to $\F_{467^{2}}$ is the simple isogeny class 1.218089.bjy and its endomorphism algebra is the quaternion algebra over \(\Q\) ramified at $467$ and $\infty$.

Base change

This is a primitive isogeny class.

Twists

This isogeny class has no twists.