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

• Label: 2.67.ag_fm
• Base field: $\F_{67}$
• Dimension: $2$
• $p$-rank: $2$
• Ordinary: yes
• Supersingular: no
• Simple: no
• Geometrically simple: no
• Primitive: yes
• Principally polarizable: yes
• Contains a Jacobian: yes

Invariants

Base field:	$\F_{67}$
Dimension:	$2$
L-polynomial:	$( 1 - 4 x + 67 x^{2} )( 1 - 2 x + 67 x^{2} )$
	$1 - 6 x + 142 x^{2} - 402 x^{3} + 4489 x^{4}$
Frobenius angles:	$\pm0.421429069538$, $\pm0.461014866847$
Angle rank:	$2$ (numerical)
Jacobians:	$80$

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$4224$	$21288960$	$90800341632$	$405808452403200$	$1822687128119282304$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$62$	$4738$	$301898$	$20138254$	$1350013502$	$90458882386$	$6060720191210$	$406067670940126$	$27206533839486206$	$1822837803356510818$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 80 curves (of which all are hyperelliptic):

• $y^2=2 x^6+46 x^5+20 x^4+28 x^3+57 x^2+45 x+50$
• $y^2=49 x^6+36 x^5+64 x^4+14 x^3+64 x^2+36 x+49$
• $y^2=64 x^6+20 x^5+49 x^4+5 x^3+49 x^2+20 x+64$
• $y^2=34 x^6+26 x^5+5 x^4+59 x^3+2 x^2+39 x+7$
• $y^2=2 x^6+21 x^5+33 x^4+26 x^3+33 x^2+21 x+2$
• $y^2=18 x^6+29 x^5+4 x^4+44 x^3+49 x^2+x+18$
• $y^2=60 x^6+11 x^5+42 x^4+21 x^3+42 x^2+11 x+60$
• $y^2=43 x^6+42 x^5+30 x^4+29 x^3+30 x^2+42 x+43$
• $y^2=5 x^6+66 x^5+32 x^4+40 x^3+32 x^2+66 x+5$
• $y^2=62 x^6+21 x^5+5 x^4+2 x^3+5 x^2+21 x+62$
• $y^2=57 x^6+x^5+42 x^4+24 x^3+42 x^2+x+57$
• $y^2=31 x^6+52 x^5+52 x^4+57 x^3+52 x^2+52 x+31$
• $y^2=7 x^6+22 x^5+5 x^4+17 x^3+44 x^2+26 x+46$
• $y^2=19 x^6+46 x^5+52 x^4+11 x^3+52 x^2+46 x+19$
• $y^2=39 x^6+47 x^5+66 x^4+27 x^3+66 x^2+47 x+39$
• $y^2=41 x^6+43 x^5+18 x^4+45 x^3+18 x^2+43 x+41$
• $y^2=52 x^6+20 x^5+51 x^3+61 x+3$
• $y^2=24 x^6+x^5+47 x^4+8 x^3+47 x^2+x+24$
• $y^2=29 x^6+58 x^5+24 x^4+52 x^3+19 x^2+31 x+36$
• $y^2=14 x^6+50 x^5+x^4+50 x^3+29 x^2+41 x+14$
• and

• $y^2=66 x^6+64 x^5+36 x^4+42 x^3+36 x^2+64 x+66$
• $y^2=60 x^6+55 x^5+9 x^4+42 x^3+9 x^2+55 x+60$
• $y^2=7 x^6+52 x^5+13 x^4+47 x^3+13 x^2+52 x+7$
• $y^2=31 x^6+3 x^5+33 x^4+50 x^3+16 x^2+57 x+46$
• $y^2=8 x^6+53 x^5+64 x^4+44 x^3+64 x^2+53 x+8$
• $y^2=22 x^6+43 x^5+9 x^4+34 x^3+6 x^2+34 x+9$
• $y^2=20 x^6+2 x^5+6 x^4+46 x^3+6 x^2+2 x+20$
• $y^2=61 x^6+7 x^5+62 x^4+21 x^3+62 x^2+7 x+61$
• $y^2=47 x^6+11 x^5+32 x^4+24 x^3+13 x^2+52 x+56$
• $y^2=35 x^6+20 x^5+14 x^3+28 x+47$
• $y^2=3 x^6+19 x^5+46 x^4+16 x^3+42 x^2+9 x+43$
• $y^2=6 x^6+55 x^5+9 x^4+60 x^3+59 x^2+60 x+49$
• $y^2=58 x^6+52 x^5+7 x^4+42 x^3+46 x^2+66 x+42$
• $y^2=12 x^6+65 x^5+51 x^4+39 x^3+31 x^2+15 x+32$
• $y^2=54 x^6+41 x^5+62 x^4+51 x^3+22 x^2+38 x+37$
• $y^2=59 x^6+28 x^5+63 x^4+58 x^3+63 x^2+28 x+59$
• $y^2=63 x^6+36 x^5+55 x^4+21 x^3+55 x^2+36 x+63$
• $y^2=37 x^6+8 x^5+6 x^4+20 x^3+6 x^2+8 x+37$
• $y^2=60 x^6+64 x^5+56 x^4+55 x^3+56 x^2+64 x+60$
• $y^2=21 x^6+62 x^5+33 x^4+57 x^3+23 x^2+6 x+47$
• $y^2=32 x^6+55 x^5+47 x^4+10 x^3+47 x^2+55 x+32$
• $y^2=10 x^6+36 x^5+18 x^4+6 x^3+38 x^2+19 x+19$
• $y^2=14 x^6+66 x^5+17 x^4+30 x^3+17 x^2+66 x+14$
• $y^2=54 x^6+9 x^4+15 x^3+37 x^2+10$
• $y^2=52 x^6+18 x^5+44 x^4+57 x^3+44 x^2+18 x+52$
• $y^2=53 x^6+38 x^5+55 x^4+28 x^3+40 x^2+50 x+52$
• $y^2=46 x^6+28 x^5+59 x^4+40 x^3+64 x^2+50 x+32$
• $y^2=56 x^6+49 x^5+58 x^4+48 x^3+18 x^2+62 x+21$
• $y^2=25 x^6+51 x^5+5 x^4+3 x^3+5 x^2+51 x+25$
• $y^2=43 x^6+63 x^5+64 x^4+63 x^3+25 x^2+20 x+5$
• $y^2=49 x^6+52 x^5+8 x^4+40 x^3+8 x^2+52 x+49$
• $y^2=35 x^6+11 x^5+64 x^4+38 x^3+40 x^2+20 x+55$
• $y^2=11 x^6+10 x^4+26 x^3+56 x^2+7$
• $y^2=65 x^6+10 x^5+33 x^4+12 x^3+55 x^2+65 x+23$
• $y^2=45 x^6+43 x^5+59 x^4+18 x^3+59 x^2+43 x+45$
• $y^2=44 x^6+47 x^5+47 x^4+5 x^3+47 x^2+47 x+44$
• $y^2=38 x^6+5 x^5+23 x^4+24 x^3+23 x^2+5 x+38$
• $y^2=7 x^6+20 x^5+3 x^4+37 x^3+3 x^2+20 x+7$
• $y^2=24 x^6+61 x^5+54 x^4+11 x^3+33 x^2+66 x+62$
• $y^2=37 x^6+23 x^5+17 x^4+x^3+17 x^2+23 x+37$
• $y^2=21 x^6+12 x^5+57 x^4+29 x^3+57 x^2+12 x+21$
• $y^2=10 x^6+42 x^5+41 x^4+25 x^3+31 x^2+27 x+17$
• $y^2=14 x^6+56 x^5+x^4+41 x^3+x^2+56 x+14$
• $y^2=46 x^6+16 x^5+25 x^4+53 x^3+25 x^2+16 x+46$
• $y^2=57 x^6+49 x^5+23 x^4+23 x^3+23 x^2+49 x+57$
• $y^2=54 x^6+46 x^5+56 x^4+5 x^3+25 x^2+51 x+17$
• $y^2=21 x^6+32 x^5+15 x^4+11 x^3+19 x^2+57 x+21$
• $y^2=51 x^6+61 x^5+45 x^4+7 x^3+52 x^2+44 x+13$
• $y^2=10 x^6+43 x^5+44 x^4+34 x^3+44 x^2+43 x+10$
• $y^2=55 x^6+33 x^5+26 x^4+54 x^3+26 x^2+33 x+55$
• $y^2=58 x^6+23 x^5+42 x^4+34 x^3+57 x^2+x+8$
• $y^2=2 x^6+66 x^5+20 x^4+19 x^3+8 x^2+32 x+28$
• $y^2=62 x^6+24 x^5+34 x^4+16 x^3+53 x^2+56 x+14$
• $y^2=4 x^6+19 x^5+x^4+58 x^3+9 x^2+65 x+35$
• $y^2=57 x^6+59 x^5+31 x^4+32 x^3+31 x^2+59 x+57$
• $y^2=60 x^6+28 x^5+60 x^4+8 x^3+29 x^2+2 x+26$
• $y^2=29 x^6+48 x^5+59 x^4+29 x^3+59 x^2+48 x+29$
• $y^2=50 x^6+x^5+6 x^4+2 x^3+6 x^2+x+50$
• $y^2=38 x^6+31 x^5+36 x^4+35 x^3+36 x^2+31 x+38$
• $y^2=51 x^6+23 x^5+49 x^3+22 x+13$

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{67}$

The isogeny class factors as 1.67.ae $\times$ 1.67.ac and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

• 1.67.ae : \(\Q(\sqrt{-7}) \).
• 1.67.ac : \(\Q(\sqrt{-66}) \).

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.ac_ew	$2$	(not in LMFDB)
2.67.c_ew	$2$	(not in LMFDB)
2.67.g_fm	$2$	(not in LMFDB)