Abelian variety isogeny class 2.79.i_gs over $\F_{79}$

• Label: 2.79.i_gs
• Base field: $\F_{79}$
• 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:	$\F_{79}$
Dimension:	$2$
L-polynomial:	$( 1 + 4 x + 79 x^{2} )^{2}$
	$1 + 8 x + 174 x^{2} + 632 x^{3} + 6241 x^{4}$
Frobenius angles:	$\pm0.572243955238$, $\pm0.572243955238$
Angle rank:	$1$ (numerical)
Jacobians:	$111$
Cyclic group of points:	no
Non-cyclic primes:	$2, 3, 7$

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$7056$	$40755456$	$242217528336$	$1516510517760000$	$9468894981093697296$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$88$	$6526$	$491272$	$38934718$	$3077257528$	$243087864766$	$19203891460072$	$1517108847680638$	$119851597216082968$	$9468276074708836606$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 111 curves (of which all are hyperelliptic):

• $y^2=61 x^6+35 x^4+35 x^2+61$
• $y^2=63 x^6+69 x^5+5 x^4+57 x^3+70 x^2+58 x+73$
• $y^2=65 x^6+78 x^4+78 x^2+65$
• $y^2=74 x^6+40 x^5+75 x^4+3 x^3+75 x^2+40 x+74$
• $y^2=60 x^5+69 x^4+x^3+69 x^2+60 x$
• $y^2=34 x^6+51 x^5+57 x^4+60 x^3+54 x^2+67 x+34$
• $y^2=62 x^6+71 x^5+2 x^4+49 x^3+2 x^2+71 x+62$
• $y^2=10 x^6+15 x^5+61 x^4+34 x^3+31 x^2+21 x+12$
• $y^2=17 x^6+8 x^5+43 x^4+63 x^3+78 x^2+20 x+33$
• $y^2=18 x^6+4 x^5+47 x^4+44 x^3+32 x^2+54 x+52$
• $y^2=64 x^6+20 x^5+8 x^4+17 x^3+36 x^2+70 x+11$
• $y^2=64 x^6+45 x^5+73 x^4+72 x^3+65 x^2+63 x+8$
• $y^2=12 x^6+71 x^4+46 x^3+74 x^2+27$
• $y^2=71 x^6+77 x^5+37 x^4+50 x^3+50 x^2+39 x+8$
• $y^2=14 x^6+71 x^5+74 x^4+40 x^3+55 x^2+71 x+39$
• $y^2=62 x^6+69 x^5+19 x^4+60 x^3+47 x^2+14 x+71$
• $y^2=19 x^6+60 x^5+35 x^4+78 x^3+40 x^2+74 x+33$
• $y^2=72 x^6+43 x^5+45 x^4+66 x^3+5 x^2+46 x+16$
• $y^2=10 x^6+65 x^5+58 x^4+17 x^3+37 x^2+23 x+1$
• $y^2=45 x^6+26 x^5+61 x^4+60 x^3+61 x^2+26 x+45$
• and

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

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{79}$.

Endomorphism algebra over $\F_{79}$

The isogeny class factors as 1.79.e^2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-3}) \)$)$

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
2.79.ai_gs	$2$	(not in LMFDB)
2.79.a_fm	$2$	(not in LMFDB)
2.79.abi_rf	$3$	(not in LMFDB)
2.79.an_dm	$3$	(not in LMFDB)
2.79.ae_acl	$3$	(not in LMFDB)
2.79.r_ic	$3$	(not in LMFDB)
2.79.ba_mp	$3$	(not in LMFDB)