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

• Label: 2.53.a_adf
• Base field: $\F_{53}$
• Dimension: $2$
• $p$-rank: $2$
• Ordinary: yes
• Supersingular: no
• Simple: yes
• Geometrically simple: no
• Primitive: yes
• Principally polarizable: yes
• Contains a Jacobian: yes

Invariants

Base field:	$\F_{53}$
Dimension:	$2$
L-polynomial:	$1 - 83 x^{2} + 2809 x^{4}$
Frobenius angles:	$\pm0.106839396580$, $\pm0.893160603420$
Angle rank:	$1$ (numerical)
Number field:	\(\Q(\sqrt{21}, \sqrt{-23})\)
Galois group:	$C_2^2$
Jacobians:	$40$

This isogeny class is simple but not 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

$r$	$1$	$2$	$3$	$4$	$5$
$A(\F_{q^r})$	$2727$	$7436529$	$22164488784$	$62239650202521$	$174887471182671207$

Point counts of the curve

$r$	$1$	$2$	$3$	$4$	$5$	$6$	$7$	$8$	$9$	$10$
$C(\F_{q^r})$	$54$	$2644$	$148878$	$7887940$	$418195494$	$22164616438$	$1174711139838$	$62259718742404$	$3299763591802134$	$174887471999829364$

Jacobians and polarizations

This isogeny class is principally polarizable and contains the Jacobians of 40 curves (of which all are hyperelliptic):

• $y^2=23 x^6+39 x^5+35 x^4+18 x^3+16 x^2+35 x+1$
• $y^2=46 x^6+25 x^5+17 x^4+36 x^3+32 x^2+17 x+2$
• $y^2=19 x^6+27 x^5+43 x^4+25 x^3+9 x^2+38 x+38$
• $y^2=38 x^6+x^5+33 x^4+50 x^3+18 x^2+23 x+23$
• $y^2=26 x^6+19 x^5+45 x^4+42 x^3+31 x^2+28 x+17$
• $y^2=12 x^6+36 x^5+14 x^4+x^3+15 x^2+38 x+33$
• $y^2=23 x^6+16 x^5+48 x^4+38 x^3+52 x^2+12 x+30$
• $y^2=46 x^6+32 x^5+43 x^4+23 x^3+51 x^2+24 x+7$
• $y^2=34 x^6+12 x^5+8 x^4+6 x^3+27 x^2+44 x+49$
• $y^2=15 x^6+24 x^5+16 x^4+12 x^3+x^2+35 x+45$
• $y^2=29 x^6+8 x^4+11 x^3+9 x^2+31 x+4$
• $y^2=5 x^6+16 x^4+22 x^3+18 x^2+9 x+8$
• $y^2=24 x^6+28 x^5+46 x^4+3 x^3+11 x^2+13 x+28$
• $y^2=48 x^6+3 x^5+39 x^4+6 x^3+22 x^2+26 x+3$
• $y^2=48 x^6+15 x^5+45 x^4+24 x^3+44 x^2+32 x+17$
• $y^2=17 x^6+15 x^5+47 x^4+41 x^3+51 x^2+20 x+24$
• $y^2=34 x^6+30 x^5+41 x^4+29 x^3+49 x^2+40 x+48$
• $y^2=12 x^6+3 x^5+2 x^4+20 x^3+6 x^2+27 x+26$
• $y^2=x^6+50 x^4+4 x^3+38 x^2+3 x+11$
• $y^2=2 x^6+47 x^4+8 x^3+23 x^2+6 x+22$
• and

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

Decomposition and endomorphism algebra

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

Endomorphism algebra over $\F_{53}$

The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{21}, \sqrt{-23})\).

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

The base change of $A$ to $\F_{53^{2}}$ is 1.2809.adf^2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-483}) \)$)$

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
2.53.a_df	$4$	(not in LMFDB)