Invariants
| Base field: | $\F_{53}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + x + 12 x^{2} + 53 x^{3} + 2809 x^{4}$ |
| Frobenius angles: | $\pm0.282059741698$, $\pm0.747309618693$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-470 +2 \sqrt{377}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $120$ |
| Isomorphism classes: | 240 |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2876$ | $7960768$ | $22182737552$ | $62344818278144$ | $174880654718803276$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $55$ | $2833$ | $149002$ | $7901265$ | $418179195$ | $22164176854$ | $1174710599887$ | $62259663737025$ | $3299763680506402$ | $174887471143149513$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 120 curves (of which all are hyperelliptic):
- $y^2=25 x^6+27 x^5+37 x^4+52 x^3+17 x^2+44 x+4$
- $y^2=33 x^6+5 x^5+32 x^4+49 x^3+50 x^2+15 x+47$
- $y^2=29 x^5+27 x^4+31 x^3+3 x^2+12 x+26$
- $y^2=26 x^6+25 x^5+36 x^4+12 x^3+5 x^2+52 x+37$
- $y^2=29 x^6+40 x^4+28 x^3+49 x^2+52 x+38$
- $y^2=7 x^6+43 x^5+18 x^4+41 x^3+48 x^2+17 x+40$
- $y^2=33 x^6+4 x^5+6 x^4+37 x^3+38 x^2+36 x+43$
- $y^2=23 x^6+42 x^5+37 x^4+29 x^3+32 x^2+28 x+31$
- $y^2=48 x^6+38 x^5+39 x^4+3 x^3+17 x^2+45 x+7$
- $y^2=11 x^6+37 x^5+50 x^4+50 x^3+31 x^2+x+15$
- $y^2=28 x^6+x^5+37 x^4+43 x^3+49 x^2+32 x+16$
- $y^2=50 x^6+7 x^5+33 x^4+21 x^3+38 x^2+47$
- $y^2=27 x^6+37 x^5+8 x^4+3 x^3+52 x^2+20 x+46$
- $y^2=16 x^6+6 x^5+28 x^4+39 x^3+33 x^2+6 x+38$
- $y^2=9 x^6+39 x^5+46 x^4+7 x^3+17 x^2+5 x+44$
- $y^2=49 x^6+36 x^5+15 x^4+47 x^3+50 x^2+24 x+21$
- $y^2=32 x^6+40 x^5+22 x^4+37 x^3+22 x^2+31 x+33$
- $y^2=45 x^6+14 x^5+24 x^4+27 x^3+21 x^2+35 x+7$
- $y^2=51 x^6+46 x^5+25 x^4+51 x^3+32 x^2+16 x+3$
- $y^2=22 x^6+31 x^5+x^4+4 x^3+43 x^2+10 x+51$
- and 100 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 \(\Q(\sqrt{-470 +2 \sqrt{377}})\). |
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.ab_m | $2$ | (not in LMFDB) |