Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 15 x + 142 x^{2} - 1005 x^{3} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.155897023988$, $\pm0.489230357322$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{-3}, \sqrt{193})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $152$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3612$ | $20415024$ | $90458971344$ | $405956916904896$ | $1822897448329009332$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $53$ | $4549$ | $300764$ | $20145625$ | $1350169283$ | $90459560518$ | $6060717483209$ | $406067667471409$ | $27206534396294948$ | $1822837806601534789$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 152 curves (of which all are hyperelliptic):
- $y^2=62 x^6+12 x^5+17 x^4+5 x^3+37 x^2+34 x+18$
- $y^2=51 x^6+57 x^5+22 x^4+61 x^3+48 x^2+47 x+56$
- $y^2=17 x^6+42 x^5+20 x^4+55 x^3+23 x^2+16 x+12$
- $y^2=12 x^6+47 x^5+65 x^4+46 x^3+61 x^2+47 x+44$
- $y^2=45 x^6+24 x^5+62 x^4+35 x^3+56 x^2+40 x+42$
- $y^2=2 x^6+4 x^3+64$
- $y^2=34 x^6+13 x^5+59 x^4+64 x^3+31 x^2+4 x+24$
- $y^2=50 x^6+7 x^5+2 x^4+26 x^3+7 x^2+10 x+12$
- $y^2=53 x^6+x^5+56 x^4+45 x^3+58 x^2+36 x+63$
- $y^2=6 x^6+54 x^5+51 x^4+39 x^3+52 x^2+16 x+24$
- $y^2=x^6+x^3+61$
- $y^2=32 x^6+55 x^5+21 x^4+25 x^3+36 x^2+2 x+1$
- $y^2=27 x^6+62 x^5+50 x^4+37 x^3+8 x^2+29 x+51$
- $y^2=45 x^6+2 x^5+37 x^4+9 x^3+5 x^2+44 x+63$
- $y^2=10 x^6+14 x^5+44 x^4+46 x^3+16 x^2+60 x+46$
- $y^2=x^6+27 x^5+39 x^4+59 x^3+46 x^2+2 x+34$
- $y^2=59 x^6+24 x^5+39 x^4+17 x^3+30 x^2+6 x+17$
- $y^2=8 x^6+42 x^5+4 x^4+44 x^3+33 x^2+34 x+56$
- $y^2=56 x^6+24 x^5+64 x^4+53 x^3+38 x^2+34 x+27$
- $y^2=41 x^6+46 x^5+66 x^3+28 x^2+30 x+18$
- and 132 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{67^{6}}$.
Endomorphism algebra over $\F_{67}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-3}, \sqrt{193})\). |
| The base change of $A$ to $\F_{67^{6}}$ is 1.90458382169.bhnoo 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-579}) \)$)$ |
- Endomorphism algebra over $\F_{67^{2}}$
The base change of $A$ to $\F_{67^{2}}$ is the simple isogeny class 2.4489.ch_abmu and its endomorphism algebra is \(\Q(\sqrt{-3}, \sqrt{193})\). - Endomorphism algebra over $\F_{67^{3}}$
The base change of $A$ to $\F_{67^{3}}$ is the simple isogeny class 2.300763.a_bhnoo and its endomorphism algebra is \(\Q(\sqrt{-3}, \sqrt{193})\).
Base change
This is a primitive isogeny class.