Invariants
| Base field: | $\F_{19}$ |
| Dimension: | $3$ |
| L-polynomial: | $1 + 4 x + 25 x^{2} + 56 x^{3} + 475 x^{4} + 1444 x^{5} + 6859 x^{6}$ |
| Frobenius angles: | $\pm0.289886882804$, $\pm0.600381330561$, $\pm0.775715144056$ |
| Angle rank: | $3$ (numerical) |
| Number field: | 6.0.2065079232.2 |
| Galois group: | $S_4\times C_2$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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: | $3$ |
| Slopes: | $[0, 0, 0, 1, 1, 1]$ |
Point counts
Point counts of the abelian variety
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $8864$ | $51907584$ | $319480179296$ | $2232032756170752$ | $15185561831785850144$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $24$ | $396$ | $6792$ | $131420$ | $2476824$ | $47038572$ | $893777160$ | $16983427004$ | $322689552792$ | $6131062430796$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 299 hyperelliptic curves, but it is unknown how many Jacobians of non-hyperelliptic curves it contains:
- $y^2=x^7+2 x^6+2 x^5+6 x^4+3 x^3+3 x^2+2 x$
- $y^2=18 x^7+7 x^6+6 x^5+15 x^4+x^3+9 x^2+x$
- $y^2=18 x^7+14 x^6+18 x^4+12 x^3+18 x^2+15 x$
- $y^2=18 x^7+18 x^6+10 x^4+12 x^3+7 x^2+11 x$
- $y^2=18 x^7+18 x^6+5 x^5+13 x^4+3 x^3+9 x^2+10 x$
- $y^2=x^7+5 x^6+3 x^5+7 x^4+9 x^3+13 x$
- $y^2=18 x^7+12 x^6+11 x^5+x^4+4 x^3+2 x^2+9 x$
- $y^2=x^7+6 x^6+6 x^5+9 x^4+9 x^3+8 x^2+7 x+17$
- $y^2=18 x^7+5 x^6+2 x^5+15 x^4+18 x^3+9 x^2+7 x+11$
- $y^2=18 x^7+6 x^6+2 x^5+17 x^4+10 x^3+4 x^2+x+9$
- $y^2=18 x^7+12 x^6+15 x^5+8 x^4+3 x^3+3 x^2+13 x+7$
- $y^2=18 x^8+16 x^7+6 x^6+2 x^5+12 x^4+3 x^3+9 x^2+7 x+8$
- $y^2=x^8+4 x^6+18 x^5+11 x^4+16 x^3+5 x^2+13 x+4$
- $y^2=x^7+7 x^6+18 x^5+x^4+17 x^2+4 x+17$
- $y^2=x^8+9 x^7+7 x^6+15 x^5+8 x^4+11 x^3+6 x^2+8 x+16$
- $y^2=x^8+4 x^7+15 x^6+7 x^5+13 x^4+2 x^3+11 x^2+8 x+17$
- $y^2=18 x^8+17 x^7+6 x^6+18 x^5+16 x^4+7 x^3+13 x^2+7 x+15$
- $y^2=18 x^8+15 x^7+15 x^6+7 x^5+11 x^4+17 x^3+17 x^2+8 x+7$
- $y^2=18 x^8+7 x^7+7 x^6+6 x^5+13 x^4+14 x^3+10 x^2+9 x+11$
- $y^2=x^8+x^7+6 x^6+16 x^5+4 x^4+11 x^3+x^2+12 x+14$
- and 279 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{19}$.
Endomorphism algebra over $\F_{19}$| The endomorphism algebra of this simple isogeny class is 6.0.2065079232.2. |
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 |
|---|---|---|
| 3.19.ae_z_ace | $2$ | (not in LMFDB) |