Abelian variety isogeny class 2.53.a_dy over $\F_{53}$

• Label: 2.53.a_dy
• Base field: $\F_{53}$
• 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:	$\F_{53}$
Dimension:	$2$
L-polynomial:	$( 1 - 2 x + 53 x^{2} )( 1 + 2 x + 53 x^{2} )$
	$1 + 102 x^{2} + 2809 x^{4}$
Frobenius angles:	$\pm0.456138099416$, $\pm0.543861900584$
Angle rank:	$1$ (numerical)
Jacobians:	$78$

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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$2912$	$8479744$	$22164562784$	$62184201404416$	$174887470525800032$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$54$	$3014$	$148878$	$7880910$	$418195494$	$22164764438$	$1174711139838$	$62259676161694$	$3299763591802134$	$174887470686087014$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 78 curves (of which all are hyperelliptic):

• $y^2=23 x^6+38 x^5+45 x^4+48 x^3+34 x^2+42 x+2$
• $y^2=46 x^6+23 x^5+37 x^4+43 x^3+15 x^2+31 x+4$
• $y^2=8 x^6+17 x^5+15 x^4+17 x^3+15 x^2+17 x+8$
• $y^2=16 x^6+34 x^5+30 x^4+34 x^3+30 x^2+34 x+16$
• $y^2=46 x^6+30 x^5+30 x^4+39 x^3+47 x^2+3 x+33$
• $y^2=39 x^6+7 x^5+7 x^4+25 x^3+41 x^2+6 x+13$
• $y^2=8 x^6+46 x^5+3 x^4+35 x^3+12 x^2+22 x+41$
• $y^2=16 x^6+39 x^5+6 x^4+17 x^3+24 x^2+44 x+29$
• $y^2=7 x^6+32 x^5+6 x^4+46 x^3+46 x^2+14 x+8$
• $y^2=14 x^6+11 x^5+12 x^4+39 x^3+39 x^2+28 x+16$
• $y^2=47 x^6+23 x^4+46 x^2+5$
• $y^2=8 x^6+42 x^4+31 x^2+11$
• $y^2=16 x^6+15 x^4+30 x^2+22$
• $y^2=39 x^6+50 x^4+47 x^2+47$
• $y^2=46 x^6+x^5+31 x^4+42 x^3+26 x^2+36 x+28$
• $y^2=39 x^6+2 x^5+9 x^4+31 x^3+52 x^2+19 x+3$
• $y^2=3 x^6+28 x^5+x^4+38 x^3+x^2+28 x+3$
• $y^2=6 x^6+3 x^5+2 x^4+23 x^3+2 x^2+3 x+6$
• $y^2=10 x^6+17 x^5+9 x^4+25 x^3+9 x^2+17 x+10$
• $y^2=20 x^6+34 x^5+18 x^4+50 x^3+18 x^2+34 x+20$
• and

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

Decomposition and endomorphism algebra

All geometric endomorphisms are defined over $\F_{53^{2}}$.

Endomorphism algebra over $\F_{53}$

The isogeny class factors as 1.53.ac $\times$ 1.53.c and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is:

• 1.53.ac : \(\Q(\sqrt{-13}) \).
• 1.53.c : \(\Q(\sqrt{-13}) \).

Endomorphism algebra over $\overline{\F}_{53}$

The base change of $A$ to $\F_{53^{2}}$ is 1.2809.dy^2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-13}) \)$)$

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
2.53.ae_eg	$2$	(not in LMFDB)
2.53.e_eg	$2$	(not in LMFDB)
2.53.a_ady	$4$	(not in LMFDB)