Abelian variety isogeny class 2.89.ag_hf over $\F_{89}$

• Label: 2.89.ag_hf
• Base field: $\F_{89}$
• 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:	$\F_{89}$
Dimension:	$2$
L-polynomial:	$( 1 - 3 x + 89 x^{2} )^{2}$
	$1 - 6 x + 187 x^{2} - 534 x^{3} + 7921 x^{4}$
Frobenius angles:	$\pm0.449173116847$, $\pm0.449173116847$
Angle rank:	$1$ (numerical)
Jacobians:	$85$
Cyclic group of points:	no
Non-cyclic primes:	$3, 29$

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$7569$	$65464281$	$498074593536$	$3934993055807529$	$31180524483641093649$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$84$	$8260$	$706518$	$62716804$	$5583845364$	$496982912686$	$44231358814356$	$3936588733125124$	$350356401360978822$	$31181719929386013700$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 85 curves (of which all are hyperelliptic):

• $y^2=19 x^6+46 x^5+41 x^4+2 x^3+31 x^2+88 x+46$
• $y^2=2 x^6+12 x^5+44 x^4+49 x^3+50 x^2+71 x+71$
• $y^2=25 x^6+10 x^5+62 x^4+71 x^3+53 x^2+16 x+55$
• $y^2=51 x^6+18 x^5+57 x^4+43 x^3+66 x^2+10 x+4$
• $y^2=3 x^6+35 x^5+31 x^4+14 x^3+58 x^2+35 x+86$
• $y^2=25 x^6+3 x^5+40 x^4+57 x^3+70 x^2+40 x+38$
• $y^2=49 x^6+51 x^5+57 x^4+38 x^3+76 x^2+70 x+9$
• $y^2=69 x^6+39 x^5+26 x^4+31 x^3+52 x^2+85 x+56$
• $y^2=23 x^6+58 x^5+42 x^4+74 x^3+72 x^2+49 x+19$
• $y^2=22 x^6+35 x^5+9 x^4+10 x^3+68 x^2+6 x+54$
• $y^2=50 x^6+26 x^5+30 x^4+41 x^3+52 x^2+35 x+87$
• $y^2=38 x^6+9 x^5+57 x^4+49 x^3+79 x^2+20 x+61$
• $y^2=71 x^6+57 x^5+29 x^4+14 x^3+50 x^2+x+56$
• $y^2=39 x^6+36 x^5+2 x^4+32 x^3+8 x^2+36 x+87$
• $y^2=11 x^6+7 x^5+58 x^4+50 x^3+72 x^2+29 x+31$
• $y^2=61 x^6+53 x^5+6 x^4+41 x^3+6 x^2+53 x+61$
• $y^2=15 x^6+11 x^5+52 x^4+52 x^3+66 x^2+63 x+79$
• $y^2=9 x^6+46 x^5+6 x^4+88 x^3+72 x^2+28 x+29$
• $y^2=77 x^6+65 x^5+53 x^4+48 x^3+80 x^2+43 x+61$
• $y^2=5 x^6+37 x^5+x^4+50 x^3+71 x^2+86 x+59$
• and

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

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{89}$.

Endomorphism algebra over $\F_{89}$

The isogeny class factors as 1.89.ad^2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-347}) \)$)$

Base change

This is a primitive isogeny class.

Twists

Below are some of the twists of this isogeny class.

Twist	Extension degree	Common base change
2.89.a_gn	$2$	(not in LMFDB)
2.89.g_hf	$2$	(not in LMFDB)
2.89.d_adc	$3$	(not in LMFDB)