Abelian variety isogeny class 2.67.ar_fy over $\F_{67}$

• Label: 2.67.ar_fy
• Base field: $\F_{67}$
• 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:	$\F_{67}$
Dimension:	$2$
L-polynomial:	$1 - 17 x + 154 x^{2} - 1139 x^{3} + 4489 x^{4}$
Frobenius angles:	$\pm0.0894596215017$, $\pm0.475250558157$
Angle rank:	$2$ (numerical)
Number field:	4.0.59974013.1
Galois group:	$D_{4}$
Jacobians:	$64$
Isomorphism classes:	64
Cyclic group of points:	no
Non-cyclic primes:	$2$

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$3488$	$20230400$	$90315635072$	$405817373312000$	$1822783847139196128$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$51$	$4509$	$300288$	$20138697$	$1350085141$	$90458988726$	$6060716056383$	$406067670068433$	$27206534453811456$	$1822837809029652589$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 64 curves (of which all are hyperelliptic):

• $y^2=21 x^5+47 x^4+24 x^3+30 x^2+17 x+46$
• $y^2=30 x^6+32 x^5+59 x^4+5 x^3+38 x^2+45 x+41$
• $y^2=61 x^6+6 x^5+x^4+32 x^3+65 x^2+38 x+61$
• $y^2=52 x^6+19 x^5+47 x^2+16 x+8$
• $y^2=2 x^6+3 x^5+34 x^4+29 x^3+36 x^2+65 x+55$
• $y^2=41 x^6+25 x^5+58 x^4+29 x^3+56 x^2+19 x+32$
• $y^2=37 x^6+15 x^5+54 x^4+53 x^3+45 x^2+26 x+28$
• $y^2=58 x^6+60 x^5+30 x^4+48 x^3+16 x^2+8 x+3$
• $y^2=63 x^6+2 x^5+42 x^4+4 x^3+x^2+34$
• $y^2=7 x^6+30 x^5+55 x^4+6 x^3+19 x^2+34 x+15$
• $y^2=43 x^6+6 x^5+48 x^4+45 x^3+18 x^2+25 x+60$
• $y^2=44 x^6+17 x^5+65 x^4+18 x^3+47 x^2+15 x+7$
• $y^2=5 x^6+21 x^5+25 x^4+47 x^3+30 x^2+28 x+4$
• $y^2=49 x^6+45 x^5+48 x^4+35 x^3+54 x^2+53 x+51$
• $y^2=48 x^6+17 x^5+35 x^4+14 x^3+61 x^2+41 x+54$
• $y^2=27 x^6+48 x^5+12 x^4+18 x^3+20 x^2+59 x+46$
• $y^2=5 x^6+26 x^5+52 x^4+64 x^3+55 x^2+30 x+43$
• $y^2=7 x^6+33 x^5+43 x^4+11 x^3+26 x^2+59 x+3$
• $y^2=16 x^6+59 x^5+51 x^4+57 x^3+10 x^2+5 x+51$
• $y^2=4 x^6+2 x^5+65 x^4+42 x^3+17 x^2+59 x+2$
• and

• $y^2=42 x^6+43 x^5+20 x^4+49 x^3+12 x^2+66 x+15$
• $y^2=11 x^6+52 x^5+25 x^4+17 x^3+17 x^2+41 x+53$
• $y^2=26 x^6+38 x^5+10 x^4+43 x^3+52 x^2+44 x+55$
• $y^2=49 x^6+13 x^5+42 x^4+42 x^3+39 x^2+3 x+37$
• $y^2=53 x^6+7 x^5+17 x^4+55 x^3+15 x^2+19 x+32$
• $y^2=13 x^6+65 x^5+14 x^4+5 x^3+2 x^2+30 x+5$
• $y^2=31 x^6+28 x^5+47 x^4+43 x^3+63 x^2+23 x+17$
• $y^2=2 x^6+7 x^5+56 x^4+31 x^3+12 x^2+2 x+60$
• $y^2=26 x^6+33 x^5+18 x^4+13 x^3+28 x^2+52 x+46$
• $y^2=58 x^6+63 x^5+36 x^4+32 x^3+16 x^2+44 x+41$
• $y^2=5 x^6+63 x^5+26 x^4+33 x^3+7 x^2+42 x$
• $y^2=58 x^6+42 x^5+66 x^4+37 x^3+61 x^2+4 x+11$
• $y^2=8 x^6+24 x^5+23 x^4+19 x^3+45 x^2+15 x+51$
• $y^2=59 x^6+31 x^5+26 x^4+61 x^3+42 x^2+39 x+57$
• $y^2=14 x^6+3 x^5+39 x^4+29 x^3+19 x^2+54 x+43$
• $y^2=23 x^5+60 x^4+23 x^3+47 x^2+17 x+44$
• $y^2=36 x^6+2 x^5+3 x^4+20 x^3+x^2+23 x+30$
• $y^2=22 x^6+15 x^5+44 x^4+5 x^3+61 x^2+52 x+53$
• $y^2=35 x^6+19 x^5+64 x^4+7 x^3+33 x^2+20 x+50$
• $y^2=47 x^6+20 x^5+2 x^4+31 x^3+15 x^2+14 x+33$
• $y^2=2 x^6+21 x^5+5 x^4+59 x^3+58 x^2+61 x+8$
• $y^2=49 x^6+42 x^5+65 x^4+19 x^3+29 x^2+22 x+42$
• $y^2=29 x^6+29 x^5+27 x^4+60 x^3+48 x^2+10 x+41$
• $y^2=42 x^6+29 x^5+63 x^4+26 x^3+55 x^2+41 x+45$
• $y^2=51 x^6+49 x^5+53 x^4+46 x^3+14 x^2+30 x+66$
• $y^2=38 x^6+38 x^5+41 x^4+44 x^3+16 x^2+16 x+8$
• $y^2=31 x^6+9 x^5+65 x^4+28 x^3+32 x^2+65 x+30$
• $y^2=58 x^6+16 x^5+28 x^4+31 x^3+60 x^2+34 x+4$
• $y^2=29 x^6+8 x^5+56 x^4+44 x^3+51 x^2+48 x+59$
• $y^2=19 x^5+30 x^4+12 x^3+26 x^2+50 x+30$
• $y^2=3 x^6+13 x^5+34 x^4+41 x^3+49 x^2+6 x+27$
• $y^2=33 x^6+2 x^5+43 x^4+33 x^3+8 x^2+64 x+3$
• $y^2=65 x^6+62 x^5+48 x^4+19 x^3+47 x^2+57 x$
• $y^2=33 x^6+16 x^5+18 x^4+49 x^3+22 x^2+39 x+2$
• $y^2=28 x^6+52 x^5+58 x^4+49 x^3+45 x^2+21 x+58$
• $y^2=5 x^6+8 x^5+7 x^4+2 x^3+8 x^2+46 x+27$
• $y^2=33 x^6+60 x^5+22 x^4+59 x^3+32 x^2+45 x+61$
• $y^2=12 x^6+2 x^5+23 x^4+4 x^3+33 x^2+21 x+3$
• $y^2=52 x^6+14 x^5+45 x^4+x^3+42 x^2+43 x+26$
• $y^2=59 x^6+x^5+25 x^4+4 x^3+2 x^2+x+38$
• $y^2=10 x^6+7 x^5+37 x^4+54 x^3+51 x^2+16$
• $y^2=57 x^6+65 x^5+33 x^4+29 x^3+22 x^2+32 x+54$
• $y^2=30 x^6+44 x^5+23 x^4+29 x^3+11 x^2+2 x+29$
• $y^2=12 x^6+60 x^5+52 x^4+21 x^3+24 x^2+64 x+18$

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{67}$.

Endomorphism algebra over $\F_{67}$

The endomorphism algebra of this simple isogeny class is 4.0.59974013.1.

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
2.67.r_fy	$2$	(not in LMFDB)