Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 12 x + 162 x^{2} - 804 x^{3} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.318695688448$, $\pm0.437939918193$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.784384.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $112$ |
| 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: | $2$ |
| Slopes: | $[0, 0, 1, 1]$ |
Point counts
Point counts of the abelian variety
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3836$ | $20975248$ | $90968534300$ | $406056637794304$ | $1822726974075427196$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $56$ | $4670$ | $302456$ | $20150574$ | $1350043016$ | $90458038190$ | $6060712740488$ | $406067683361374$ | $27206534374006232$ | $1822837805800728350$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 112 curves (of which all are hyperelliptic):
- $y^2=63 x^6+48 x^5+37 x^4+49 x^3+23 x^2+37 x+18$
- $y^2=4 x^6+28 x^5+14 x^4+50 x^3+65 x^2+11 x+44$
- $y^2=56 x^6+48 x^5+49 x^4+15 x^3+45 x^2+4 x+18$
- $y^2=46 x^6+11 x^5+29 x^4+38 x^3+9 x^2+39 x+48$
- $y^2=42 x^6+28 x^5+21 x^4+30 x^3+11 x^2+48 x+26$
- $y^2=16 x^6+24 x^5+59 x^4+27 x^3+21 x^2+45 x+11$
- $y^2=15 x^6+47 x^5+21 x^4+49 x^3+15 x^2+29 x+52$
- $y^2=29 x^5+13 x^4+61 x^3+43 x^2+51 x+57$
- $y^2=24 x^6+25 x^5+30 x^4+33 x^3+22 x^2+x+15$
- $y^2=64 x^6+32 x^5+12 x^4+47 x^3+39 x^2+66 x+30$
- $y^2=39 x^6+24 x^5+34 x^4+12 x^3+59 x^2+57 x+36$
- $y^2=57 x^6+43 x^5+64 x^4+52 x^3+19 x^2+54 x+48$
- $y^2=19 x^6+15 x^5+64 x^4+37 x^3+54 x^2+21 x+18$
- $y^2=63 x^6+26 x^5+62 x^4+50 x^3+28 x^2+33 x+42$
- $y^2=35 x^6+30 x^5+33 x^4+12 x^3+7 x^2+22 x+31$
- $y^2=63 x^6+41 x^5+28 x^4+51 x^3+29 x^2+52 x+54$
- $y^2=25 x^6+16 x^5+64 x^4+37 x^3+41 x^2+24 x+34$
- $y^2=64 x^6+25 x^5+51 x^4+35 x^3+55 x^2+26 x+19$
- $y^2=5 x^6+21 x^5+8 x^4+40 x^3+39 x^2+57 x+40$
- $y^2=15 x^6+25 x^5+22 x^4+35 x^3+12 x^2+30 x+33$
- and 92 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67}$.
Endomorphism algebra over $\F_{67}$| The endomorphism algebra of this simple isogeny class is 4.0.784384.1. |
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 |
|---|---|---|
| 2.67.m_gg | $2$ | (not in LMFDB) |