Invariants
| Base field: | $\F_{53}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 5 x + 11 x^{2} + 265 x^{3} + 2809 x^{4}$ |
| Frobenius angles: | $\pm0.326162446826$, $\pm0.831280423181$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.209725.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $63$ |
| Cyclic group of points: | yes |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3091$ | $7885141$ | $22277050279$ | $62308392067141$ | $174865558347217936$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $59$ | $2807$ | $149633$ | $7896651$ | $418143094$ | $22164363623$ | $1174707948193$ | $62259702899443$ | $3299763711000779$ | $174887470470934022$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 63 curves (of which all are hyperelliptic):
- $y^2=32 x^5+30 x^4+23 x^3+21 x^2+2 x+52$
- $y^2=49 x^6+33 x^5+29 x^4+14 x^2+49 x+37$
- $y^2=43 x^6+6 x^5+49 x^4+36 x^3+17 x^2+44 x+5$
- $y^2=4 x^6+33 x^5+18 x^4+9 x^3+37 x^2+28 x+25$
- $y^2=20 x^6+2 x^5+7 x^4+40 x^3+24 x^2+35 x+31$
- $y^2=37 x^6+6 x^5+35 x^4+46 x^3+18 x^2+38 x+17$
- $y^2=5 x^6+45 x^5+45 x^4+49 x^2+17 x+47$
- $y^2=34 x^6+21 x^5+9 x^4+25 x^3+30 x^2+51 x+30$
- $y^2=43 x^6+18 x^5+49 x^4+18 x^3+28 x^2+9 x+20$
- $y^2=39 x^6+46 x^5+43 x^4+37 x^3+20 x^2+12 x+30$
- $y^2=29 x^6+38 x^5+17 x^4+50 x^3+35 x^2+25 x+26$
- $y^2=36 x^6+38 x^5+30 x^4+37 x^3+39 x^2+6 x+39$
- $y^2=29 x^6+27 x^5+47 x^4+36 x^3+7 x^2+3 x+41$
- $y^2=49 x^6+38 x^5+42 x^4+32 x^3+37 x^2+7 x+35$
- $y^2=29 x^6+33 x^5+16 x^4+41 x^3+4 x^2+5 x+1$
- $y^2=49 x^6+33 x^5+14 x^4+22 x^3+46 x^2+48 x+4$
- $y^2=19 x^6+51 x^5+45 x^4+10 x^3+36 x^2+49 x+41$
- $y^2=12 x^6+40 x^5+2 x^4+46 x^3+4 x^2+12 x+47$
- $y^2=50 x^6+52 x^5+12 x^4+48 x^3+27 x^2+33 x$
- $y^2=40 x^6+42 x^4+40 x^3+27 x^2+37 x+45$
- and 43 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{53}$.
Endomorphism algebra over $\F_{53}$| The endomorphism algebra of this simple isogeny class is 4.0.209725.1. |
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 |
|---|---|---|
| 2.53.af_l | $2$ | (not in LMFDB) |