Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 11 x + 67 x^{2} )( 1 + 5 x + 67 x^{2} )$ |
| $1 - 6 x + 79 x^{2} - 402 x^{3} + 4489 x^{4}$ | |
| Frobenius angles: | $\pm0.265464728668$, $\pm0.598798062002$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $248$ |
| Cyclic group of points: | yes |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $4161$ | $20709297$ | $90458209296$ | $406186704812889$ | $1822988232878362401$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $62$ | $4612$ | $300764$ | $20157028$ | $1350236522$ | $90458036422$ | $6060703103342$ | $406067672135236$ | $27206534396294948$ | $1822837803114318532$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 248 curves (of which all are hyperelliptic):
- $y^2=66 x^6+19 x^5+33 x^4+44 x^3+51 x^2+21 x+4$
- $y^2=63 x^6+25 x^5+40 x^4+41 x^3+61 x+60$
- $y^2=49 x^6+30 x^5+56 x^4+8 x^3+37 x^2+60 x+18$
- $y^2=9 x^6+54 x^5+61 x^4+42 x^3+58 x^2+18 x+37$
- $y^2=27 x^6+23 x^5+15 x^4+46 x^3+12 x^2+11 x+8$
- $y^2=54 x^6+30 x^5+15 x^4+16 x^3+25 x^2+31 x+31$
- $y^2=48 x^6+62 x^5+65 x^4+15 x^3+39 x^2+63 x+15$
- $y^2=45 x^6+12 x^5+15 x^4+55 x^3+34 x^2+25 x+61$
- $y^2=46 x^6+30 x^5+15 x^4+49 x^3+66 x^2+8 x+14$
- $y^2=32 x^6+60 x^5+47 x^4+2 x^3+53 x^2+14 x+39$
- $y^2=8 x^6+52 x^5+8 x^4+28 x^3+39 x^2+45 x+66$
- $y^2=31 x^6+54 x^5+29 x^4+43 x^3+29 x^2+54 x+31$
- $y^2=53 x^6+19 x^5+2 x^4+29 x^3+42 x^2+15 x+61$
- $y^2=6 x^6+65 x^5+62 x^4+64 x^3+60 x^2+7 x+31$
- $y^2=10 x^6+56 x^5+28 x^4+47 x^3+65 x^2+8 x+37$
- $y^2=31 x^6+42 x^5+5 x^4+31 x^3+25 x^2+4 x+19$
- $y^2=38 x^6+35 x^5+52 x^4+34 x^3+65 x^2+19 x+21$
- $y^2=23 x^6+64 x^5+31 x^4+46 x^3+33 x^2+51 x+34$
- $y^2=57 x^6+39 x^5+40 x^4+37 x^3+22 x^2+20 x+5$
- $y^2=36 x^6+10 x^5+14 x^4+50 x^3+44 x^2+39 x+52$
- and 228 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67^{6}}$.
Endomorphism algebra over $\F_{67}$| The isogeny class factors as 1.67.al $\times$ 1.67.f and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
| The base change of $A$ to $\F_{67^{6}}$ is 1.90458382169.ajvta 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-3}) \)$)$ |
- Endomorphism algebra over $\F_{67^{2}}$
The base change of $A$ to $\F_{67^{2}}$ is 1.4489.n $\times$ 1.4489.ef. The endomorphism algebra for each factor is: - Endomorphism algebra over $\F_{67^{3}}$
The base change of $A$ to $\F_{67^{3}}$ is 1.300763.abhw $\times$ 1.300763.bhw. The endomorphism algebra for each factor is:
Base change
This is a primitive isogeny class.