Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 8 x + 38 x^{2} - 536 x^{3} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.150145561224$, $\pm0.631726902585$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.609168.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $216$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3984$ | $20206848$ | $90095837328$ | $406139216154624$ | $1822995278405508624$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $60$ | $4502$ | $299556$ | $20154670$ | $1350241740$ | $90458479046$ | $6060715272756$ | $406067749802590$ | $27206534363264604$ | $1822837803073039862$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 216 curves (of which all are hyperelliptic):
- $y^2=45 x^6+x^5+60 x^4+18 x^3+26 x^2+33 x+37$
- $y^2=13 x^6+55 x^5+56 x^4+5 x^3+29 x^2+26 x+32$
- $y^2=34 x^6+19 x^5+33 x^4+3 x^3+54 x^2+58 x+4$
- $y^2=29 x^6+23 x^5+47 x^4+58 x^3+11 x^2+29 x$
- $y^2=51 x^6+19 x^5+10 x^4+38 x^3+13 x^2+59 x+3$
- $y^2=65 x^6+27 x^5+13 x^4+22 x^3+31 x^2+40 x+61$
- $y^2=12 x^6+8 x^5+52 x^4+2 x^3+33 x^2+61 x+54$
- $y^2=60 x^6+3 x^5+8 x^4+51 x^3+65 x^2+43 x+52$
- $y^2=15 x^6+8 x^5+28 x^4+61 x^3+21 x^2+21 x+25$
- $y^2=27 x^6+54 x^5+12 x^4+25 x^3+7 x^2+31 x+66$
- $y^2=45 x^6+23 x^5+45 x^4+19 x^3+3 x^2+7 x+19$
- $y^2=50 x^6+20 x^5+14 x^4+53 x^3+4 x^2+15 x+20$
- $y^2=60 x^6+55 x^5+2 x^4+33 x^3+40 x^2+30 x+33$
- $y^2=54 x^6+30 x^5+38 x^4+26 x^3+36 x^2+12 x+12$
- $y^2=41 x^6+21 x^5+2 x^4+66 x^3+29 x^2+47 x$
- $y^2=66 x^6+7 x^5+19 x^4+41 x^3+37 x+38$
- $y^2=12 x^6+7 x^5+34 x^4+17 x^3+34 x^2+47 x+44$
- $y^2=37 x^6+24 x^5+24 x^4+57 x^3+33 x^2+19 x+6$
- $y^2=27 x^6+9 x^5+5 x^4+22 x^3+34 x^2+17 x+16$
- $y^2=60 x^6+14 x^5+49 x^4+11 x^3+12 x^2+21 x+62$
- and 196 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 4.0.609168.1. |
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.i_bm | $2$ | (not in LMFDB) |