Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 12 x + 97 x^{2} + 564 x^{3} + 2209 x^{4}$ |
| Frobenius angles: | $\pm0.505930355567$, $\pm0.827402977766$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{-3}, \sqrt{-11})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $132$ |
| Isomorphism classes: | 68 |
| Cyclic group of points: | yes |
This isogeny class is simple but not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2883$ | $4990473$ | $10771948944$ | $23801926230729$ | $52593465960512643$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $60$ | $2260$ | $103752$ | $4877764$ | $229320300$ | $10779628030$ | $506621805540$ | $23811280581124$ | $1119130495435224$ | $52599132387625300$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 132 curves (of which all are hyperelliptic):
- $y^2=7 x^6+8 x^5+28 x^4+44 x^3+27 x^2+30 x+39$
- $y^2=6 x^6+37 x^5+4 x^4+8 x^3+43 x^2+35 x+9$
- $y^2=13 x^6+45 x^5+33 x^4+32 x^3+26 x^2+8 x+34$
- $y^2=29 x^6+37 x^5+23 x^4+11 x^3+29 x+41$
- $y^2=27 x^6+20 x^5+27 x^4+22 x^3+10 x^2+14 x+45$
- $y^2=45 x^6+6 x^5+15 x^4+3 x^3+18 x^2+9 x+41$
- $y^2=24 x^6+11 x^5+46 x^4+25 x^3+4 x^2+4 x+5$
- $y^2=27 x^6+30 x^5+11 x^4+20 x^3+31 x^2+34 x+28$
- $y^2=17 x^6+22 x^5+20 x^4+5 x^3+32 x^2+7 x+27$
- $y^2=42 x^6+19 x^5+12 x^4+16 x^3+4 x^2+18 x+1$
- $y^2=35 x^6+29 x^5+5 x^4+2 x^3+x^2+x+46$
- $y^2=39 x^6+38 x^5+2 x^4+31 x^3+40 x^2+21 x+5$
- $y^2=40 x^6+26 x^5+39 x^4+39 x^3+23 x^2+18 x+34$
- $y^2=23 x^6+32 x^5+27 x^4+5 x^3+42 x^2+43 x+7$
- $y^2=15 x^6+25 x^5+6 x^4+33 x^3+5 x^2+21 x+10$
- $y^2=6 x^6+28 x^5+8 x^4+11 x^3+17 x^2+45 x+16$
- $y^2=9 x^6+40 x^5+44 x^4+x^3+2 x^2+9 x+28$
- $y^2=20 x^6+34 x^5+9 x^4+3 x^3+36 x^2+43 x+18$
- $y^2=13 x^6+21 x^5+25 x^4+28 x^3+21 x^2+10 x+13$
- $y^2=5 x^6+40 x^5+18 x^4+12 x^3+24 x^2+21 x+18$
- and 112 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{47^{3}}$.
Endomorphism algebra over $\F_{47}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-3}, \sqrt{-11})\). |
| The base change of $A$ to $\F_{47^{3}}$ is 1.103823.abk 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-11}) \)$)$ |
Base change
This is a primitive isogeny class.