Abelian variety isogeny class 2.97.ak_ig over $\F_{97}$

• Label: 2.97.ak_ig
• Base field: $\F_{97}$
• 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:	$\F_{97}$
Dimension:	$2$
L-polynomial:	$1 - 10 x + 214 x^{2} - 970 x^{3} + 9409 x^{4}$
Frobenius angles:	$\pm0.380263176618$, $\pm0.455187707833$
Angle rank:	$2$ (numerical)
Number field:	4.0.3191600.1
Galois group:	$D_{4}$
Jacobians:	$120$
Isomorphism classes:	160

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$8644$	$91660976$	$835265994436$	$7835914982863616$	$73739867010819192964$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$88$	$9738$	$915184$	$88512126$	$8587043808$	$832972060362$	$80798308214824$	$7837433693745918$	$760231057411665928$	$73742412678301925578$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 120 curves (of which all are hyperelliptic):

• $y^2=18 x^6+7 x^5+18 x^4+5 x^3+37 x^2+90 x+55$
• $y^2=24 x^6+51 x^5+61 x^4+58 x^3+67 x^2+18 x+38$
• $y^2=16 x^6+63 x^5+25 x^4+44 x^3+73 x^2+39 x+69$
• $y^2=19 x^6+6 x^5+21 x^4+51 x^3+53 x^2+13 x+36$
• $y^2=22 x^6+34 x^5+55 x^4+22 x^3+90 x^2+37 x+5$
• $y^2=27 x^6+31 x^5+45 x^4+27 x^3+72 x^2+60 x+82$
• $y^2=64 x^6+49 x^5+49 x^4+2 x^3+34 x^2+5 x+71$
• $y^2=45 x^6+69 x^5+66 x^4+51 x^3+47 x+91$
• $y^2=74 x^6+17 x^5+75 x^3+78 x^2+38 x+82$
• $y^2=92 x^6+4 x^5+70 x^4+59 x^3+16 x^2+75 x+14$
• $y^2=76 x^6+86 x^5+28 x^4+64 x^3+29 x^2+10 x+3$
• $y^2=28 x^6+79 x^5+96 x^4+40 x^3+76 x^2+61 x+18$
• $y^2=81 x^6+13 x^5+92 x^4+68 x^3+58 x^2+62 x+68$
• $y^2=67 x^6+45 x^5+58 x^4+40 x^3+29 x^2+57 x+38$
• $y^2=22 x^6+3 x^5+26 x^4+14 x^3+89 x^2+71 x+46$
• $y^2=76 x^6+59 x^5+80 x^4+55 x^3+17 x^2+18 x+49$
• $y^2=21 x^6+25 x^5+18 x^4+50 x^3+41 x^2+70 x+45$
• $y^2=41 x^6+90 x^5+95 x^4+22 x^3+70 x^2+18 x+3$
• $y^2=90 x^6+53 x^5+11 x^4+4 x^3+10 x^2+89 x+41$
• $y^2=82 x^6+47 x^5+18 x^4+88 x^3+67 x^2+13 x+46$
• and

• $y^2=73 x^6+64 x^5+23 x^4+95 x^3+47 x^2+25 x+69$
• $y^2=85 x^6+47 x^5+50 x^4+49 x^3+19 x^2+81 x+36$
• $y^2=13 x^6+90 x^5+34 x^4+88 x^3+81 x^2+39 x+20$
• $y^2=92 x^6+28 x^5+33 x^4+9 x^3+50 x^2+19 x+70$
• $y^2=88 x^6+5 x^5+47 x^4+37 x^3+12 x^2+12 x+32$
• $y^2=29 x^6+75 x^5+44 x^4+42 x^3+83 x^2+51 x+24$
• $y^2=83 x^6+71 x^5+67 x^4+56 x^3+33 x^2+26 x+52$
• $y^2=18 x^6+59 x^5+5 x^4+89 x^3+49 x^2+54 x+26$
• $y^2=18 x^6+69 x^5+36 x^4+14 x^3+68 x^2+30 x+14$
• $y^2=11 x^6+3 x^5+7 x^4+44 x^3+15 x^2+95 x+47$
• $y^2=89 x^6+3 x^5+75 x^4+43 x^3+46 x^2+66 x+74$
• $y^2=91 x^6+92 x^5+42 x^4+80 x^3+13 x^2+26 x+45$
• $y^2=91 x^6+73 x^5+45 x^4+33 x^3+17 x^2+7 x+90$
• $y^2=38 x^6+18 x^5+95 x^4+22 x^3+56 x^2+12 x+75$
• $y^2=32 x^6+46 x^5+46 x^4+30 x^3+57 x^2+64 x+2$
• $y^2=96 x^6+81 x^5+8 x^4+17 x^3+13 x^2+83 x+9$
• $y^2=40 x^6+26 x^5+4 x^4+38 x^3+23 x^2+6 x+53$
• $y^2=20 x^6+74 x^5+21 x^4+23 x^3+5 x^2+22 x+1$
• $y^2=94 x^6+47 x^5+x^4+6 x^3+39 x^2+76 x+71$
• $y^2=50 x^6+4 x^5+85 x^4+33 x^3+61 x^2+65 x+92$
• $y^2=58 x^6+10 x^5+49 x^4+21 x^3+25 x^2+89 x+55$
• $y^2=7 x^6+49 x^5+79 x^4+4 x^3+12 x^2+6$
• $y^2=85 x^6+23 x^5+45 x^4+67 x^3+53 x^2+85 x+21$
• $y^2=8 x^6+82 x^5+11 x^4+77 x^3+6 x^2+29 x+72$
• $y^2=11 x^6+51 x^5+10 x^4+54 x^3+82 x^2+92 x+15$
• $y^2=9 x^6+59 x^5+93 x^4+x^3+50 x^2+81 x+71$
• $y^2=7 x^6+96 x^5+15 x^4+11 x^3+10 x^2+10 x+30$
• $y^2=37 x^6+x^5+77 x^4+41 x^3+73 x^2+66 x+89$
• $y^2=63 x^6+84 x^5+61 x^4+46 x^3+14 x^2+82 x+14$
• $y^2=72 x^6+74 x^5+84 x^4+2 x^3+35 x^2+85 x+43$
• $y^2=31 x^6+60 x^5+29 x^4+16 x^3+49 x^2+37 x+82$
• $y^2=93 x^6+86 x^5+66 x^4+26 x^3+75 x^2+21 x+65$
• $y^2=64 x^6+89 x^5+88 x^4+65 x^3+11 x^2+76 x+85$
• $y^2=88 x^6+21 x^5+40 x^4+4 x^3+27 x^2+17 x+70$
• $y^2=92 x^6+56 x^5+9 x^4+54 x^3+70 x^2+16 x+52$
• $y^2=73 x^6+22 x^5+67 x^4+16 x^3+66 x^2+82 x+34$
• $y^2=73 x^6+43 x^5+30 x^4+37 x^3+7 x^2+94$
• $y^2=15 x^6+82 x^5+89 x^4+x^3+4 x^2+30 x+85$
• $y^2=17 x^6+40 x^5+94 x^4+68 x^3+84 x^2+90 x+92$
• $y^2=38 x^6+20 x^5+66 x^4+64 x^3+10 x^2+76 x+38$
• $y^2=49 x^6+58 x^5+31 x^4+27 x^3+71 x^2+52 x+40$
• $y^2=48 x^6+x^5+54 x^4+60 x^3+28 x^2+45 x+53$
• $y^2=13 x^6+15 x^5+9 x^4+30 x^3+43 x^2+74 x+14$
• $y^2=x^6+62 x^5+28 x^4+86 x^3+60 x^2+4 x+64$
• $y^2=76 x^6+94 x^5+47 x^4+31 x^3+86 x^2+12 x+92$
• $y^2=88 x^6+57 x^5+83 x^4+69 x^3+25 x^2+65 x+14$
• $y^2=36 x^6+84 x^5+21 x^4+33 x^3+56 x^2+18 x+6$
• $y^2=26 x^6+65 x^5+88 x^4+32 x^3+84 x^2+44 x+1$
• $y^2=18 x^6+13 x^5+6 x^4+55 x^3+59 x^2+53 x+82$
• $y^2=2 x^6+30 x^5+69 x^4+67 x^3+59 x+79$
• $y^2=80 x^6+75 x^5+35 x^4+47 x^3+75 x^2+67 x+9$
• $y^2=54 x^6+73 x^5+56 x^4+51 x^3+91 x^2+8 x+49$
• $y^2=75 x^6+7 x^5+67 x^4+46 x^3+80 x^2+69 x+10$
• $y^2=30 x^6+60 x^5+24 x^4+55 x^3+52 x^2+30 x+44$
• $y^2=65 x^6+x^5+61 x^4+47 x^3+66 x^2+83 x+96$
• $y^2=77 x^6+19 x^5+85 x^4+56 x^3+x^2+63 x+76$
• $y^2=63 x^6+30 x^5+62 x^4+25 x^3+47 x^2+53 x+11$
• $y^2=61 x^6+56 x^5+11 x^4+56 x^3+70 x^2+64 x+93$
• $y^2=43 x^6+81 x^5+92 x^4+33 x^3+27 x^2+54 x+2$
• $y^2=35 x^6+7 x^5+75 x^4+58 x^3+70 x^2+25 x+37$
• $y^2=32 x^6+48 x^5+83 x^4+41 x^3+34 x^2+6 x+10$
• $y^2=46 x^6+26 x^5+25 x^4+5 x^3+16 x^2+3 x+34$
• $y^2=78 x^6+36 x^5+9 x^4+7 x^3+72 x^2+93 x+1$
• $y^2=21 x^6+70 x^5+57 x^4+89 x^2+26 x+70$
• $y^2=83 x^6+61 x^5+87 x^4+34 x^3+38 x^2+96 x+83$
• $y^2=61 x^6+7 x^5+38 x^4+96 x^3+88 x^2+87 x+23$
• $y^2=62 x^6+18 x^5+71 x^4+17 x^3+56 x^2+18 x+55$
• $y^2=75 x^6+45 x^4+95 x^3+80 x^2+83 x+88$
• $y^2=86 x^6+24 x^5+3 x^4+78 x^3+77 x^2+10 x+48$
• $y^2=60 x^6+30 x^5+93 x^4+25 x^3+15 x^2+94 x+8$
• $y^2=45 x^6+72 x^5+44 x^4+47 x^3+88 x^2+38 x+60$
• $y^2=41 x^6+58 x^5+39 x^4+3 x^3+25 x^2+5 x+52$
• $y^2=66 x^6+12 x^5+33 x^4+65 x^3+7 x^2+81 x+80$
• $y^2=11 x^6+54 x^5+85 x^4+14 x^3+21 x^2+87 x+80$
• $y^2=92 x^6+23 x^5+74 x^4+88 x^3+22 x^2+25 x+32$
• $y^2=10 x^6+28 x^5+58 x^4+47 x^3+33 x^2+9 x+55$
• $y^2=13 x^6+65 x^5+49 x^4+39 x^3+6 x^2+92 x$
• $y^2=91 x^6+39 x^5+58 x^4+54 x^3+32 x^2+83 x+44$
• $y^2=45 x^6+17 x^5+6 x^4+28 x^3+94 x^2+3 x+58$
• $y^2=9 x^6+3 x^5+40 x^4+40 x^3+61 x^2+72 x+61$
• $y^2=84 x^6+40 x^5+72 x^4+75 x^3+92 x^2+3 x+34$
• $y^2=4 x^6+x^5+96 x^4+77 x^3+11 x^2+52 x+92$
• $y^2=82 x^6+x^5+94 x^4+26 x^3+84 x^2+79 x+43$
• $y^2=86 x^6+13 x^5+68 x^4+54 x^3+43 x^2+68 x+71$
• $y^2=71 x^6+44 x^5+90 x^4+33 x^3+40 x^2+22 x+8$
• $y^2=48 x^6+84 x^5+78 x^4+85 x^3+41 x^2+84 x+18$
• $y^2=21 x^6+44 x^5+28 x^4+26 x^3+57 x^2+7 x+25$
• $y^2=74 x^6+62 x^5+95 x^4+47 x^3+56 x^2+91 x+28$
• $y^2=34 x^6+85 x^5+91 x^4+44 x^3+39 x^2+30 x+69$
• $y^2=80 x^6+57 x^5+77 x^4+41 x^3+6 x^2+23 x+96$
• $y^2=33 x^6+29 x^5+16 x^4+8 x^3+94 x^2+23$
• $y^2=64 x^6+44 x^5+91 x^4+47 x^3+19 x^2+68 x+76$
• $y^2=56 x^6+42 x^5+81 x^4+72 x^3+69 x^2+23 x+57$
• $y^2=69 x^6+49 x^5+21 x^4+77 x^3+93 x^2+58 x+68$
• $y^2=39 x^6+26 x^5+15 x^4+63 x^3+60 x^2+38 x+96$
• $y^2=13 x^6+29 x^5+70 x^4+72 x^3+38 x^2+24 x+10$
• $y^2=31 x^6+57 x^5+54 x^4+85 x^3+83 x^2+82 x+70$
• $y^2=40 x^6+91 x^5+55 x^4+77 x^3+92 x^2+32 x+13$
• $y^2=67 x^6+83 x^5+75 x^4+81 x^3+73 x^2+60 x+53$
• $y^2=58 x^6+89 x^5+46 x^3+32 x^2+70 x+54$

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{97}$.

Endomorphism algebra over $\F_{97}$

The endomorphism algebra of this simple isogeny class is 4.0.3191600.1.

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
2.97.k_ig	$2$	(not in LMFDB)