Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 6 x + 47 x^{2} )( 1 + 6 x + 47 x^{2} )$ |
| $1 + 58 x^{2} + 2209 x^{4}$ | |
| Frobenius angles: | $\pm0.355830380849$, $\pm0.644169619151$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $366$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3$ |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2268$ | $5143824$ | $10779026076$ | $23821583901696$ | $52599132152282268$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $48$ | $2326$ | $103824$ | $4881790$ | $229345008$ | $10778836822$ | $506623120464$ | $23811303958654$ | $1119130473102768$ | $52599132068734486$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 366 curves (of which all are hyperelliptic):
- $y^2=11 x^6+28 x^5+11 x^4+45 x^3+13 x^2+36 x+10$
- $y^2=8 x^6+46 x^5+8 x^4+37 x^3+18 x^2+39 x+3$
- $y^2=10 x^6+37 x^5+28 x^4+33 x^3+18 x^2+19 x+43$
- $y^2=3 x^6+44 x^5+46 x^4+24 x^3+43 x^2+x+27$
- $y^2=x^6+14 x^5+32 x^4+6 x^3+32 x^2+19 x+13$
- $y^2=5 x^6+23 x^5+19 x^4+30 x^3+19 x^2+x+18$
- $y^2=18 x^6+9 x^5+21 x^4+14 x^3+41 x^2+20 x+34$
- $y^2=43 x^6+45 x^5+11 x^4+23 x^3+17 x^2+6 x+29$
- $y^2=31 x^6+2 x^5+36 x^4+7 x^3+16 x^2+12 x+20$
- $y^2=14 x^6+10 x^5+39 x^4+35 x^3+33 x^2+13 x+6$
- $y^2=25 x^6+25 x^5+16 x^3+22 x^2+5 x+10$
- $y^2=31 x^6+31 x^5+33 x^3+16 x^2+25 x+3$
- $y^2=43 x^6+15 x^5+x^4+26 x^3+13 x^2+4 x+25$
- $y^2=27 x^6+28 x^5+5 x^4+36 x^3+18 x^2+20 x+31$
- $y^2=35 x^5+18 x^4+13 x^3+41 x^2+40 x+19$
- $y^2=34 x^5+43 x^4+18 x^3+17 x^2+12 x+1$
- $y^2=44 x^6+19 x^5+16 x^4+15 x^2+4 x+26$
- $y^2=32 x^6+x^5+33 x^4+28 x^2+20 x+36$
- $y^2=39 x^6+24 x^5+7 x^4+20 x^3+26 x^2+7 x+13$
- $y^2=7 x^6+26 x^5+35 x^4+6 x^3+36 x^2+35 x+18$
- and 346 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{47^{2}}$.
Endomorphism algebra over $\F_{47}$| The isogeny class factors as 1.47.ag $\times$ 1.47.g and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
| The base change of $A$ to $\F_{47^{2}}$ is 1.2209.cg 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-38}) \)$)$ |
Base change
This is a primitive isogeny class.