Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 13 x + 115 x^{2} + 611 x^{3} + 2209 x^{4}$ |
| Frobenius angles: | $\pm0.544022090874$, $\pm0.800675976909$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.86042525.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $42$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2949$ | $5016249$ | $10732233771$ | $23810272974621$ | $52596615736119984$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $61$ | $2271$ | $103369$ | $4879475$ | $229334036$ | $10779525027$ | $506621487755$ | $23811279432979$ | $1119130589850763$ | $52599131862880686$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 42 curves (of which all are hyperelliptic):
- $y^2=37 x^6+43 x^5+15 x^3+38 x^2+15 x+21$
- $y^2=22 x^6+31 x^5+36 x^4+41 x^3+3 x^2+10 x+9$
- $y^2=24 x^6+34 x^5+39 x^4+16 x^3+31 x^2+17 x+33$
- $y^2=21 x^6+21 x^5+33 x^4+25 x^3+11 x^2+33 x+17$
- $y^2=24 x^6+16 x^5+5 x^4+38 x^3+24 x^2+44 x+17$
- $y^2=15 x^6+5 x^5+35 x^4+35 x^3+4 x^2+31 x+42$
- $y^2=40 x^6+10 x^5+35 x^4+29 x^3+22 x^2+28 x+1$
- $y^2=24 x^6+37 x^5+42 x^4+33 x^3+41 x^2+38 x+21$
- $y^2=12 x^6+19 x^5+2 x^4+6 x^3+20 x^2+45 x+36$
- $y^2=2 x^6+8 x^5+44 x^4+43 x^3+8 x^2+28 x+14$
- $y^2=6 x^6+x^5+45 x^4+31 x^3+31 x^2+14 x+7$
- $y^2=x^6+35 x^5+44 x^4+9 x^3+18 x^2+46 x+45$
- $y^2=24 x^6+32 x^5+23 x^4+10 x^3+41 x^2+3 x+33$
- $y^2=34 x^6+27 x^5+15 x^4+8 x^3+27 x^2+38 x+45$
- $y^2=10 x^6+x^5+41 x^4+30 x^3+13 x^2+41 x+32$
- $y^2=45 x^6+25 x^5+22 x^4+18 x^3+40 x^2+15 x+16$
- $y^2=17 x^6+19 x^5+4 x^4+7 x^3+3 x^2+37 x+39$
- $y^2=21 x^6+35 x^5+46 x^4+34 x^3+12 x^2+45 x+21$
- $y^2=14 x^6+22 x^5+45 x^4+23 x^3+12 x^2+23 x+16$
- $y^2=46 x^6+26 x^5+16 x^4+15 x^3+11 x^2+31 x+13$
- and 22 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 4.0.86042525.1. |
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 |
|---|---|---|
| 2.47.an_el | $2$ | (not in LMFDB) |