Invariants
Base field: | $\F_{47}$ |
Dimension: | $2$ |
L-polynomial: | $1 + 8 x + 62 x^{2} + 376 x^{3} + 2209 x^{4}$ |
Frobenius angles: | $\pm0.431493733475$, $\pm0.793592088610$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.110736.1 |
Galois group: | $D_{4}$ |
Jacobians: | $192$ |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $2656$ | $5014528$ | $10795112800$ | $23815638237184$ | $52586108536134496$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $56$ | $2270$ | $103976$ | $4880574$ | $229288216$ | $10779424670$ | $506624295688$ | $23811283664254$ | $1119130470960632$ | $52599131534496350$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 192 curves (of which all are hyperelliptic):
- $y^2=12 x^6+2 x^5+6 x^4+34 x^3+36 x^2+31 x+21$
- $y^2=14 x^6+35 x^5+x^4+12 x^3+38 x^2+5 x+11$
- $y^2=42 x^6+41 x^5+41 x^4+41 x^3+24 x^2+22 x+7$
- $y^2=21 x^6+27 x^5+13 x^4+23 x^3+45 x^2+33 x+20$
- $y^2=8 x^6+4 x^5+33 x^4+44 x^3+6 x^2+37 x+5$
- $y^2=27 x^6+20 x^5+44 x^4+30 x^3+22 x^2+33 x+37$
- $y^2=32 x^6+28 x^5+12 x^4+21 x^3+26 x^2+8 x+35$
- $y^2=13 x^6+8 x^5+22 x^4+3 x^3+31 x^2+11 x+27$
- $y^2=37 x^6+43 x^5+19 x^4+18 x^3+10 x^2+46 x+9$
- $y^2=27 x^6+28 x^5+29 x^4+25 x^3+4 x^2+29 x+41$
- $y^2=38 x^6+5 x^5+20 x^4+29 x^3+25 x^2+3 x+28$
- $y^2=18 x^6+9 x^5+44 x^4+45 x^3+28 x^2+10 x+2$
- $y^2=3 x^6+31 x^5+15 x^4+9 x^3+28 x^2+38 x+24$
- $y^2=13 x^6+28 x^5+7 x^4+10 x^3+4 x^2+25 x+19$
- $y^2=27 x^6+x^5+13 x^4+41 x^3+2 x^2+5 x+45$
- $y^2=24 x^6+7 x^5+18 x^4+38 x^3+21 x^2+34 x+32$
- $y^2=23 x^5+6 x^4+15 x^3+30 x^2+4 x+6$
- $y^2=7 x^6+39 x^5+5 x^4+28 x^2+6 x+43$
- $y^2=41 x^6+14 x^5+6 x^4+43 x^3+17 x^2+10 x+7$
- $y^2=31 x^6+20 x^5+36 x^4+33 x^3+13 x^2+13 x+1$
- and 172 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 4.0.110736.1. |
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.ai_ck | $2$ | (not in LMFDB) |