Invariants
| Base field: | $\F_{43}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 3 x + 42 x^{2} + 129 x^{3} + 1849 x^{4}$ |
| Frobenius angles: | $\pm0.367557882401$, $\pm0.718145914016$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.126940525.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $152$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2024$ | $3562240$ | $6324117536$ | $11701032217600$ | $21607368426319544$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $47$ | $1925$ | $79544$ | $3422553$ | $146980457$ | $6321146150$ | $271819886819$ | $11688202234993$ | $502592632212872$ | $21611482406727125$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 152 curves (of which all are hyperelliptic):
- $y^2=11 x^5+38 x^4+5 x^3+40 x^2+9 x+26$
- $y^2=31 x^6+20 x^5+13 x^4+34 x^3+38 x^2+13 x+15$
- $y^2=5 x^6+20 x^5+11 x^4+33 x^3+34 x^2+16 x+38$
- $y^2=8 x^6+23 x^5+32 x^4+20 x^3+3 x^2+16 x+16$
- $y^2=16 x^6+32 x^5+6 x^4+31 x^3+41 x^2+18 x+31$
- $y^2=6 x^6+37 x^5+24 x^4+16 x^3+21 x^2+27 x+41$
- $y^2=28 x^6+40 x^5+22 x^4+18 x^3+10 x^2+40 x$
- $y^2=31 x^6+25 x^5+x^4+33 x^3+x^2+2 x+18$
- $y^2=20 x^6+35 x^5+40 x^4+3 x^3+4 x^2+38 x+26$
- $y^2=41 x^6+32 x^5+42 x^4+39 x^3+5 x^2+35 x+42$
- $y^2=18 x^6+25 x^5+18 x^4+7 x^3+24 x^2+28 x+11$
- $y^2=20 x^6+9 x^5+13 x^4+18 x^3+12 x^2+30 x+29$
- $y^2=34 x^6+13 x^5+42 x^4+42 x^3+29 x^2+31 x+10$
- $y^2=19 x^6+11 x^5+3 x^4+38 x^3+11 x^2+34 x+4$
- $y^2=33 x^6+12 x^5+35 x^4+3 x^3+24 x^2+36 x+34$
- $y^2=24 x^6+4 x^5+29 x^4+10 x^3+26 x^2+15 x+34$
- $y^2=3 x^6+39 x^5+20 x^4+4 x^3+7 x^2+20 x+10$
- $y^2=38 x^6+31 x^5+30 x^4+22 x^3+20 x^2+17 x+16$
- $y^2=7 x^6+9 x^5+7 x^4+28 x^3+25 x^2+30 x+23$
- $y^2=2 x^6+19 x^5+27 x^4+31 x^3+7 x^2+3 x+13$
- and 132 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{43}$.
Endomorphism algebra over $\F_{43}$| The endomorphism algebra of this simple isogeny class is 4.0.126940525.1. |
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 |
|---|---|---|
| 2.43.ad_bq | $2$ | (not in LMFDB) |