Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 10 x + 102 x^{2} + 470 x^{3} + 2209 x^{4}$ |
| Frobenius angles: | $\pm0.520371123646$, $\pm0.731726573474$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.1417256.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $120$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2792$ | $5114944$ | $10712002184$ | $23811414665216$ | $52597997298799432$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $58$ | $2314$ | $103174$ | $4879710$ | $229340058$ | $10779337738$ | $506623823974$ | $23811269405694$ | $1119130527308218$ | $52599132852845514$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 120 curves (of which all are hyperelliptic):
- $y^2=26 x^6+3 x^5+30 x^4+7 x^3+42 x^2+42 x+19$
- $y^2=24 x^6+14 x^5+9 x^4+16 x^3+42 x^2+2 x+25$
- $y^2=14 x^6+10 x^5+x^4+x^3+3 x^2+7 x+30$
- $y^2=10 x^6+8 x^5+23 x^4+32 x^3+6 x^2+44 x+15$
- $y^2=40 x^6+25 x^5+9 x^3+19 x^2+17 x+1$
- $y^2=3 x^6+10 x^5+8 x^4+x^3+3 x^2+9 x+15$
- $y^2=6 x^6+12 x^5+23 x^4+25 x^3+12 x^2+6 x+18$
- $y^2=33 x^6+26 x^5+41 x^4+43 x^3+22 x^2+2 x+31$
- $y^2=17 x^6+33 x^5+7 x^4+2 x^3+10 x^2+37 x$
- $y^2=8 x^6+6 x^5+19 x^4+45 x^3+18 x^2+32 x+16$
- $y^2=12 x^6+31 x^5+45 x^4+22 x^3+19 x^2+33 x+15$
- $y^2=42 x^6+19 x^5+2 x^3+7 x^2+9 x+31$
- $y^2=44 x^6+9 x^5+44 x^4+3 x^3+40 x^2+24 x+29$
- $y^2=17 x^6+28 x^5+16 x^4+3 x^3+27 x^2+34 x+31$
- $y^2=15 x^6+26 x^5+40 x^4+31 x^3+x^2+10 x+28$
- $y^2=37 x^6+40 x^5+21 x^4+29 x^3+43 x^2+x+28$
- $y^2=6 x^6+19 x^4+40 x^3+25 x^2+14 x+20$
- $y^2=40 x^6+3 x^5+33 x^4+38 x^2+18 x+36$
- $y^2=12 x^6+24 x^5+9 x^4+41 x^3+8 x^2+5 x+18$
- $y^2=36 x^5+5 x^4+28 x^3+7 x^2+44 x+7$
- and 100 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{47}$.
Endomorphism algebra over $\F_{47}$| The endomorphism algebra of this simple isogeny class is 4.0.1417256.2. |
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 |
|---|---|---|
| 2.47.ak_dy | $2$ | (not in LMFDB) |