Invariants
| Base field: | $\F_{89}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 24 x + 314 x^{2} - 2136 x^{3} + 7921 x^{4}$ |
| Frobenius angles: | $\pm0.212197425368$, $\pm0.338421846338$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.148032.6 |
| Galois group: | $D_{4}$ |
| Jacobians: | $132$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6076$ | $63166096$ | $498658881532$ | $3937913895379968$ | $31182065559633024316$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $66$ | $7974$ | $707346$ | $62763358$ | $5584121346$ | $496980809286$ | $44231330183442$ | $3936588808808254$ | $350356403742490818$ | $31181719923581315814$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 132 curves (of which all are hyperelliptic):
- $y^2=53 x^6+51 x^5+68 x^4+63 x^3+83 x^2+82 x+83$
- $y^2=59 x^6+31 x^5+84 x^4+43 x^3+6 x^2+12 x+82$
- $y^2=59 x^6+50 x^5+87 x^4+17 x^3+26 x^2+16 x+86$
- $y^2=83 x^6+85 x^5+43 x^4+34 x^3+36 x^2+65 x+41$
- $y^2=45 x^6+39 x^5+37 x^4+64 x^3+15 x^2+26 x+3$
- $y^2=72 x^6+9 x^5+59 x^4+17 x^3+67 x^2+2 x+82$
- $y^2=43 x^6+80 x^5+87 x^4+5 x^3+84 x^2+22 x+5$
- $y^2=29 x^6+81 x^5+83 x^4+30 x^3+12 x^2+23 x+37$
- $y^2=35 x^6+39 x^5+63 x^4+24 x^3+68 x^2+39 x+82$
- $y^2=39 x^6+67 x^5+6 x^4+22 x^3+22 x^2+46 x+75$
- $y^2=76 x^6+45 x^5+76 x^4+42 x^3+33 x^2+19 x+19$
- $y^2=33 x^6+60 x^5+76 x^4+64 x^3+72 x^2+21 x+62$
- $y^2=47 x^6+20 x^5+2 x^4+56 x^3+42 x^2+40 x+83$
- $y^2=66 x^6+85 x^5+13 x^4+64 x^3+74 x^2+18 x+75$
- $y^2=56 x^6+4 x^5+54 x^4+35 x^3+4 x^2+46 x+12$
- $y^2=47 x^6+63 x^5+18 x^4+40 x^3+29 x^2+25 x+49$
- $y^2=24 x^6+65 x^5+65 x^4+66 x^3+62 x^2+42 x+52$
- $y^2=73 x^6+49 x^5+56 x^4+50 x^3+69 x^2+20 x+35$
- $y^2=10 x^6+76 x^5+24 x^4+41 x^3+14 x^2+34 x+5$
- $y^2=60 x^6+28 x^5+52 x^4+40 x^3+78 x^2+14 x+37$
- and 112 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{89}$.
Endomorphism algebra over $\F_{89}$| The endomorphism algebra of this simple isogeny class is 4.0.148032.6. |
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 |
|---|---|---|
| 2.89.y_mc | $2$ | (not in LMFDB) |