Properties

Label 2.37.ae_ck
Base field $\F_{37}$
Dimension $2$
$p$-rank $2$
Ordinary yes
Supersingular no
Simple no
Geometrically simple no
Primitive yes
Principally polarizable yes
Contains a Jacobian yes

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Invariants

Base field:  $\F_{37}$
Dimension:  $2$
L-polynomial:  $( 1 - 6 x + 37 x^{2} )( 1 + 2 x + 37 x^{2} )$
  $1 - 4 x + 62 x^{2} - 148 x^{3} + 1369 x^{4}$
Frobenius angles:  $\pm0.335828188403$, $\pm0.552568456711$
Angle rank:  $2$ (numerical)
Jacobians:  $130$
Cyclic group of points:    no
Non-cyclic primes:   $2$

This isogeny class is not 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

$r$ $1$ $2$ $3$ $4$ $5$
$A(\F_{q^r})$ $1280$ $2027520$ $2577685760$ $3510853632000$ $4808817120646400$

Point counts of the curve

$r$ $1$ $2$ $3$ $4$ $5$ $6$ $7$ $8$ $9$ $10$
$C(\F_{q^r})$ $34$ $1478$ $50890$ $1873294$ $69347314$ $2565680726$ $94931034778$ $3512480601886$ $129961785257410$ $4808584420966118$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 130 curves (of which all are hyperelliptic):

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{37}$.

Endomorphism algebra over $\F_{37}$
The isogeny class factors as 1.37.ag $\times$ 1.37.c and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

TwistExtension degreeCommon base change
2.37.ai_di$2$(not in LMFDB)
2.37.e_ck$2$(not in LMFDB)
2.37.i_di$2$(not in LMFDB)

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

TwistExtension degreeCommon base change
2.37.ai_di$2$(not in LMFDB)
2.37.e_ck$2$(not in LMFDB)
2.37.i_di$2$(not in LMFDB)
2.37.as_fq$4$(not in LMFDB)
2.37.ag_c$4$(not in LMFDB)
2.37.g_c$4$(not in LMFDB)
2.37.s_fq$4$(not in LMFDB)