Abelian variety isogeny class 2.37.k_db over $\F_{37}$

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

Invariants

Base field:	$\F_{37}$
Dimension:	$2$
L-polynomial:	$1 + 10 x + 79 x^{2} + 370 x^{3} + 1369 x^{4}$
Frobenius angles:	$\pm0.513815853518$, $\pm0.784072262361$
Angle rank:	$2$ (numerical)
Number field:	4.0.215225.1
Galois group:	$D_{4}$
Jacobians:	$44$
Cyclic group of points:	yes

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$1829$	$1955201$	$2552669456$	$3512090407481$	$4807714186567989$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$48$	$1428$	$50394$	$1873956$	$69331408$	$2565884982$	$94931715024$	$3512473473348$	$129961770916818$	$4808584376561428$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 44 curves (of which all are hyperelliptic):

• $y^2=10 x^6+3 x^5+26 x^4+26 x^3+11 x^2+26 x+35$
• $y^2=9 x^6+32 x^5+17 x^4+3 x^3+12 x^2+20 x+3$
• $y^2=7 x^6+20 x^5+8 x^4+33 x^3+3 x^2+14 x+27$
• $y^2=15 x^6+6 x^5+26 x^4+10 x^3+12 x^2+24 x+28$
• $y^2=16 x^6+12 x^5+26 x^4+15 x^3+8 x^2+21 x+26$
• $y^2=34 x^6+10 x^5+31 x^4+21 x^3+7 x^2+20 x+7$
• $y^2=22 x^6+36 x^5+x^4+36 x^3+12 x^2+20 x+15$
• $y^2=4 x^6+28 x^5+32 x^4+25 x^3+26 x^2+30 x+15$
• $y^2=12 x^6+30 x^5+27 x^4+27 x^3+9 x+17$
• $y^2=31 x^6+2 x^5+25 x^4+18 x^3+31 x^2+11$
• $y^2=35 x^6+27 x^5+4 x^4+27 x^3+20 x^2+18 x+12$
• $y^2=19 x^6+28 x^5+27 x^4+x^3+x^2+11 x+2$
• $y^2=3 x^6+15 x^5+2 x^4+32 x^3+18 x^2+12 x+1$
• $y^2=10 x^6+33 x^5+4 x^4+20 x^3+7 x^2+34 x+28$
• $y^2=22 x^6+6 x^5+11 x^4+30 x^3+7 x^2+12 x+27$
• $y^2=12 x^6+30 x^5+17 x^4+21 x^3+7 x^2+35 x+24$
• $y^2=16 x^6+33 x^5+19 x^4+30 x^3+35 x^2+15 x+27$
• $y^2=34 x^6+34 x^5+25 x^4+6 x^3+30 x^2+20 x+3$
• $y^2=21 x^6+5 x^5+20 x^4+20 x^3+31 x^2+12 x+21$
• $y^2=33 x^6+35 x^5+14 x^4+20 x^3+7 x^2+29 x+9$
• and

• $y^2=30 x^6+8 x^5+16 x^4+31 x^3+12 x^2+25 x+35$
• $y^2=33 x^6+35 x^5+20 x^4+17 x^3+x+21$
• $y^2=3 x^6+10 x^5+2 x^4+17 x^3+2 x^2+23 x+28$
• $y^2=9 x^6+22 x^5+31 x^4+10 x^3+27 x^2+4 x+33$
• $y^2=25 x^6+4 x^5+33 x^4+36 x^3+36 x^2+11 x+10$
• $y^2=19 x^6+34 x^5+16 x^4+3 x^3+13 x^2+12 x+26$
• $y^2=34 x^6+32 x^5+16 x^4+24 x^3+19 x^2+16 x+28$
• $y^2=15 x^6+6 x^4+15 x^3+19 x^2+26 x+3$
• $y^2=9 x^6+20 x^5+31 x^4+6 x^3+8 x^2+16 x+22$
• $y^2=35 x^6+35 x^5+2 x^4+6 x^3+23 x^2+5 x+14$
• $y^2=14 x^6+27 x^5+35 x^4+19 x^3+15 x^2+29 x+34$
• $y^2=9 x^6+15 x^5+9 x^4+8 x^3+29 x^2+32 x+29$
• $y^2=21 x^6+21 x^5+15 x^4+35 x^3+29 x^2+9 x+21$
• $y^2=28 x^6+14 x^5+24 x^4+13 x^3+35 x^2+12 x+10$
• $y^2=32 x^6+3 x^5+19 x^4+15 x^3+6 x^2+21 x+18$
• $y^2=18 x^6+2 x^5+27 x^4+24 x^3+6 x^2+26 x+11$
• $y^2=16 x^6+24 x^5+25 x^4+21 x^3+10 x^2+21 x+36$
• $y^2=2 x^6+21 x^5+2 x^4+7 x^3+15 x^2+26 x+10$
• $y^2=32 x^6+24 x^5+35 x^4+12 x^3+12 x^2+33 x+10$
• $y^2=30 x^6+19 x^5+33 x^4+18 x^3+2 x^2+16 x+4$
• $y^2=36 x^6+20 x^5+27 x^4+17 x^3+8 x^2+8 x+12$
• $y^2=20 x^6+11 x^5+36 x^4+21 x^3+5 x^2+26 x+32$
• $y^2=7 x^6+20 x^5+27 x^4+30 x^3+32 x^2+26 x+9$
• $y^2=7 x^6+4 x^5+13 x^4+26 x^3+5 x^2+25 x+15$

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{37}$

The endomorphism algebra of this simple isogeny class is 4.0.215225.1.

Base change

This is a primitive isogeny class.

Twists

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

Twist	Extension degree	Common base change
2.37.ak_db	$2$	(not in LMFDB)