Invariants
| Base field: | $\F_{47}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 6 x + 100 x^{2} - 282 x^{3} + 2209 x^{4}$ |
| Frobenius angles: | $\pm0.387838122247$, $\pm0.470522273339$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-176 -6 \sqrt{3}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $54$ |
| Isomorphism classes: | 54 |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $2022$ | $5253156$ | $10856144286$ | $23787740239056$ | $52589210255711502$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $42$ | $2374$ | $104562$ | $4874854$ | $229301742$ | $10779284374$ | $506624869590$ | $23811288716158$ | $1119130425561546$ | $52599132085878454$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 54 curves (of which all are hyperelliptic):
- $y^2=29 x^6+45 x^5+4 x^4+4 x^3+16 x^2+39 x+22$
- $y^2=41 x^6+40 x^5+2 x^4+43 x^3+25 x^2+7 x+23$
- $y^2=10 x^6+25 x^5+41 x^4+16 x^3+13 x^2+26 x+36$
- $y^2=26 x^6+44 x^5+8 x^4+42 x^3+38 x+23$
- $y^2=8 x^6+39 x^5+41 x^4+37 x^3+14 x^2+19 x+11$
- $y^2=14 x^6+10 x^5+32 x^4+5 x^3+12 x^2+42 x+10$
- $y^2=43 x^6+38 x^5+11 x^4+46 x^3+33 x^2+36 x+13$
- $y^2=28 x^6+32 x^5+34 x^4+41 x^3+17 x^2+11 x+26$
- $y^2=38 x^6+14 x^5+33 x^4+37 x^3+37 x^2+44 x+31$
- $y^2=39 x^6+28 x^5+43 x^4+26 x^3+24 x^2+31 x+23$
- $y^2=41 x^6+17 x^5+25 x^4+25 x^3+32 x^2+29 x+18$
- $y^2=40 x^6+29 x^5+27 x^4+19 x^3+43 x^2+27 x+23$
- $y^2=39 x^6+17 x^5+15 x^4+11 x^3+37 x^2+43 x+6$
- $y^2=29 x^6+46 x^5+10 x^4+12 x^3+38 x^2+3 x+23$
- $y^2=12 x^6+41 x^5+33 x^4+23 x^3+8 x^2+39 x+35$
- $y^2=2 x^6+36 x^5+7 x^4+8 x^3+24 x^2+46 x+22$
- $y^2=24 x^6+19 x^5+29 x^4+31 x^3+33 x^2+27 x+35$
- $y^2=23 x^6+29 x^5+43 x^4+31 x^3+35 x^2+33 x+35$
- $y^2=42 x^6+x^5+12 x^4+33 x^3+4 x+4$
- $y^2=38 x^6+33 x^5+6 x^4+39 x^3+14 x^2+31 x+10$
- and 34 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 \(\Q(\sqrt{-176 -6 \sqrt{3}})\). |
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.g_dw | $2$ | (not in LMFDB) |