Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 122 x^{2} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.432131395335$, $\pm0.567868604665$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\zeta_{12})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $198$ |
| Isomorphism classes: | 162 |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4612$ | $21270544$ | $90458555044$ | $405829727686656$ | $1822837803114318532$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $68$ | $4734$ | $300764$ | $20139310$ | $1350125108$ | $90458727918$ | $6060711605324$ | $406067688399454$ | $27206534396294948$ | $1822837801676875614$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 198 curves (of which all are hyperelliptic):
- $y^2=31 x^6+59 x^5+18 x^4+35 x^3+57 x^2+37 x+44$
- $y^2=62 x^6+51 x^5+36 x^4+3 x^3+47 x^2+7 x+21$
- $y^2=49 x^6+59 x^5+4 x^4+37 x^3+27 x^2+66 x+50$
- $y^2=31 x^6+51 x^5+8 x^4+7 x^3+54 x^2+65 x+33$
- $y^2=27 x^6+7 x^5+16 x^4+56 x^3+31 x^2+11 x+6$
- $y^2=54 x^6+14 x^5+32 x^4+45 x^3+62 x^2+22 x+12$
- $y^2=5 x^6+5 x^5+11 x^4+27 x^3+15 x^2+32 x+1$
- $y^2=52 x^6+60 x^5+43 x^4+29 x^3+4 x^2+63 x+65$
- $y^2=37 x^6+53 x^5+19 x^4+58 x^3+8 x^2+59 x+63$
- $y^2=15 x^6+31 x^5+23 x^4+4 x^3+26 x^2+8 x+34$
- $y^2=30 x^6+62 x^5+46 x^4+8 x^3+52 x^2+16 x+1$
- $y^2=16 x^6+49 x^5+47 x^4+12 x^3+15 x^2+4 x+11$
- $y^2=32 x^6+31 x^5+27 x^4+24 x^3+30 x^2+8 x+22$
- $y^2=42 x^6+35 x^5+63 x^4+65 x^3+37 x^2+10 x+36$
- $y^2=66 x^6+34 x^5+27 x^4+53 x^3+63 x^2+57 x+64$
- $y^2=65 x^6+x^5+54 x^4+39 x^3+59 x^2+47 x+61$
- $y^2=27 x^6+15 x^5+2 x^4+39 x^3+63 x^2+29 x+11$
- $y^2=54 x^6+30 x^5+4 x^4+11 x^3+59 x^2+58 x+22$
- $y^2=26 x^6+23 x^5+24 x^4+37 x^3+54 x^2+13 x+40$
- $y^2=52 x^6+46 x^5+48 x^4+7 x^3+41 x^2+26 x+13$
- and 178 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67^{2}}$.
Endomorphism algebra over $\F_{67}$| The endomorphism algebra of this simple isogeny class is \(\Q(\zeta_{12})\). |
| The base change of $A$ to $\F_{67^{2}}$ is 1.4489.es 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-3}) \)$)$ |
Base change
This is a primitive isogeny class.