Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 3 x + 88 x^{2} + 141 x^{3} + 2209 x^{4}$ |
| Frobenius angles: | $\pm0.468088878149$, $\pm0.603307164017$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.34229448.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $42$ |
| Isomorphism classes: | 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2442$ | $5260068$ | $10743813432$ | $23785648771104$ | $52602731365496862$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $51$ | $2377$ | $103482$ | $4874425$ | $229360701$ | $10779310186$ | $506622951627$ | $23811288220945$ | $1119130435242342$ | $52599132026472337$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 42 curves (of which all are hyperelliptic):
- $y^2=18 x^6+38 x^5+24 x^4+28 x^3+12 x^2+23$
- $y^2=43 x^6+41 x^5+15 x^4+19 x^3+33 x^2+17 x+17$
- $y^2=11 x^6+10 x^5+30 x^4+29 x^3+40 x^2+33 x+17$
- $y^2=24 x^6+28 x^5+31 x^4+11 x^3+24 x^2+5 x+32$
- $y^2=38 x^6+7 x^5+19 x^4+43 x^3+2 x^2+x+26$
- $y^2=24 x^6+6 x^5+4 x^4+3 x^3+23 x^2+24 x$
- $y^2=11 x^6+21 x^5+35 x^4+5 x^3+6 x^2+16 x+31$
- $y^2=32 x^6+30 x^5+9 x^4+44 x^3+35 x^2+2 x+40$
- $y^2=25 x^6+26 x^5+32 x^4+2 x^3+36 x^2+22 x+5$
- $y^2=29 x^6+15 x^5+4 x^4+43 x^3+15 x^2+40 x+45$
- $y^2=34 x^6+46 x^5+21 x^4+41 x^3+14 x+31$
- $y^2=3 x^6+35 x^5+17 x^4+33 x^3+43 x^2+45 x+40$
- $y^2=2 x^6+x^5+26 x^4+44 x^3+38 x^2+27 x+6$
- $y^2=26 x^6+8 x^5+29 x^4+34 x^3+5 x^2+46 x+6$
- $y^2=6 x^6+40 x^5+33 x^4+16 x^3+6 x^2+39 x+25$
- $y^2=37 x^6+42 x^5+16 x^4+41 x^3+30 x^2+9 x+23$
- $y^2=12 x^6+x^5+33 x^4+2 x^3+22 x^2+35 x+9$
- $y^2=9 x^6+43 x^5+8 x^4+18 x^3+17 x^2+37 x+28$
- $y^2=43 x^6+36 x^5+11 x^4+33 x^3+5 x^2+31 x+40$
- $y^2=23 x^6+13 x^5+6 x^4+2 x^3+43 x^2+36 x+23$
- 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 4.0.34229448.2. |
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.ad_dk | $2$ | (not in LMFDB) |