Invariants
| Base field: | $\F_{67}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 10 x + 102 x^{2} - 670 x^{3} + 4489 x^{4}$ |
| Frobenius angles: | $\pm0.221945405892$, $\pm0.549781334575$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.23470776.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $240$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3912$ | $20624064$ | $90473751144$ | $406090790025216$ | $1823001108465536232$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $58$ | $4594$ | $300814$ | $20152270$ | $1350246058$ | $90459041218$ | $6060706403614$ | $406067634199774$ | $27206534391918298$ | $1822837802486783314$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 240 curves (of which all are hyperelliptic):
- $y^2=44 x^6+59 x^5+9 x^4+35 x^3+24 x^2+52 x+47$
- $y^2=49 x^6+38 x^5+53 x^4+19 x^3+45 x^2+15 x+48$
- $y^2=5 x^6+64 x^5+58 x^4+58 x^3+19 x^2+19 x+34$
- $y^2=14 x^6+8 x^5+49 x^4+34 x^3+46 x^2+19$
- $y^2=55 x^6+19 x^5+26 x^4+36 x^3+51 x^2+59 x+56$
- $y^2=38 x^6+8 x^5+9 x^4+46 x^3+32 x^2+59 x+57$
- $y^2=34 x^6+41 x^5+14 x^4+15 x^3+21 x^2+64 x+29$
- $y^2=46 x^6+23 x^5+42 x^4+34 x^3+7 x^2+55 x+3$
- $y^2=65 x^6+7 x^5+56 x^4+51 x^3+9 x^2+53 x+30$
- $y^2=66 x^6+36 x^5+66 x^4+49 x^3+61 x^2+19 x+63$
- $y^2=27 x^6+4 x^5+4 x^4+64 x^3+66 x^2+42 x+32$
- $y^2=34 x^6+32 x^5+45 x^4+22 x^3+23 x^2+59 x+59$
- $y^2=55 x^6+2 x^5+64 x^4+x^3+44 x^2+16 x+32$
- $y^2=58 x^6+4 x^5+3 x^4+14 x^3+48 x^2+38 x+16$
- $y^2=9 x^6+27 x^5+54 x^4+63 x^3+64 x^2+42 x+12$
- $y^2=2 x^5+28 x^4+61 x^3+56 x^2+x+5$
- $y^2=37 x^6+42 x^5+44 x^4+6 x^3+25 x^2+36 x+62$
- $y^2=26 x^6+51 x^5+49 x^4+65 x^3+64 x^2+53 x$
- $y^2=3 x^6+16 x^5+2 x^4+20 x^3+16 x^2+8 x+23$
- $y^2=16 x^6+49 x^5+12 x^4+60 x^3+55 x^2+46 x+8$
- and 220 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 4.0.23470776.2. |
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.k_dy | $2$ | (not in LMFDB) |