Invariants
| Base field: | $\F_{89}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 6 x - 10 x^{2} + 534 x^{3} + 7921 x^{4}$ |
| Frobenius angles: | $\pm0.301137952908$, $\pm0.858557795712$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.597969072.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $252$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $8452$ | $62308144$ | $498391864708$ | $3937588581802752$ | $31181199317177463172$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $96$ | $7866$ | $706968$ | $62758174$ | $5583966216$ | $496981386330$ | $44231309057136$ | $3936588885275710$ | $350356403659239504$ | $31181719944093686586$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 252 curves (of which all are hyperelliptic):
- $y^2=56 x^6+33 x^5+30 x^4+9 x^3+61 x^2+9 x+85$
- $y^2=65 x^6+83 x^5+61 x^4+35 x^3+2 x^2+14 x+21$
- $y^2=23 x^6+64 x^5+x^4+10 x^3+66 x^2+63 x+45$
- $y^2=37 x^6+62 x^5+51 x^4+78 x^3+30 x^2+84 x+1$
- $y^2=88 x^6+23 x^5+26 x^4+88 x^3+69 x^2+24 x+12$
- $y^2=47 x^6+48 x^5+25 x^4+72 x^3+65 x^2+69 x+43$
- $y^2=14 x^6+33 x^5+74 x^4+39 x^3+13 x^2+24 x+14$
- $y^2=61 x^6+54 x^5+60 x^4+4 x^3+36 x^2+67 x+20$
- $y^2=59 x^6+4 x^5+25 x^4+71 x^3+82 x^2+x+31$
- $y^2=6 x^6+68 x^5+21 x^4+82 x^3+85 x^2+25 x+72$
- $y^2=19 x^6+75 x^5+35 x^4+68 x^3+57 x^2+55 x+39$
- $y^2=4 x^6+45 x^5+33 x^4+79 x^3+19 x^2+7 x+52$
- $y^2=11 x^6+22 x^5+43 x^4+72 x^3+62 x^2+47 x+25$
- $y^2=49 x^6+86 x^5+25 x^4+57 x^3+36 x^2+38 x+22$
- $y^2=61 x^6+30 x^5+64 x^4+48 x^3+9 x^2+58 x+55$
- $y^2=69 x^6+9 x^5+27 x^4+x^3+82 x^2+46 x+43$
- $y^2=72 x^6+43 x^5+53 x^4+66 x^2+74 x+21$
- $y^2=6 x^6+32 x^5+13 x^4+66 x^3+68 x^2+8 x+55$
- $y^2=21 x^6+58 x^5+51 x^4+54 x^3+10 x^2+71 x+9$
- $y^2=44 x^6+44 x^5+3 x^4+43 x^3+35 x^2+75 x+13$
- and 232 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 4.0.597969072.1. |
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 |
|---|---|---|
| 2.89.ag_ak | $2$ | (not in LMFDB) |