Invariants
| Base field: | $\F_{97}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 6 x + 91 x^{2} + 582 x^{3} + 9409 x^{4}$ |
| Frobenius angles: | $\pm0.374212215810$, $\pm0.742201595010$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.5858832.4 |
| Galois group: | $D_{4}$ |
| Jacobians: | $420$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $10089$ | $89923257$ | $833266975248$ | $7839108217764009$ | $73739970538050288249$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $104$ | $9556$ | $912998$ | $88548196$ | $8587055864$ | $832970427838$ | $80798305764056$ | $7837433597732164$ | $760231060291143974$ | $73742412681818470516$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 420 curves (of which all are hyperelliptic):
- $y^2=60 x^6+x^5+14 x^4+18 x^3+75 x^2+50 x+87$
- $y^2=27 x^6+96 x^5+75 x^4+44 x^3+74 x^2+85 x+9$
- $y^2=x^6+90 x^5+89 x^4+93 x^3+68 x^2+55 x+21$
- $y^2=92 x^6+51 x^5+93 x^4+18 x^3+73 x^2+11 x+22$
- $y^2=45 x^6+x^5+11 x^4+25 x^3+20 x^2+8 x+29$
- $y^2=16 x^6+84 x^5+62 x^4+90 x^3+65 x^2+33 x+57$
- $y^2=27 x^6+45 x^5+75 x^4+12 x^3+4 x^2+63 x+55$
- $y^2=2 x^6+55 x^5+15 x^4+38 x^3+63 x^2+54 x+72$
- $y^2=x^6+68 x^5+84 x^4+20 x^3+26 x^2+25 x+37$
- $y^2=5 x^6+67 x^5+68 x^4+43 x^3+88 x^2+72 x+36$
- $y^2=34 x^6+49 x^5+22 x^4+45 x^3+63 x^2+35 x+51$
- $y^2=49 x^6+46 x^4+45 x^3+62 x^2+33 x+16$
- $y^2=27 x^6+88 x^5+37 x^4+30 x^3+7 x^2+4 x+50$
- $y^2=6 x^6+64 x^5+4 x^4+79 x^3+34 x^2+69 x+16$
- $y^2=81 x^6+66 x^5+52 x^4+29 x^3+16 x^2+21 x+95$
- $y^2=37 x^6+30 x^5+45 x^4+17 x^3+58 x^2+60 x+19$
- $y^2=78 x^6+29 x^5+59 x^4+57 x^3+26 x^2+90 x+15$
- $y^2=19 x^6+18 x^5+60 x^4+14 x^3+38 x^2+25 x+96$
- $y^2=15 x^6+41 x^5+63 x^4+85 x^3+33 x^2+85 x+57$
- $y^2=75 x^6+87 x^5+13 x^4+91 x^3+69 x^2+68 x+57$
- and 400 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{97}$.
Endomorphism algebra over $\F_{97}$| The endomorphism algebra of this simple isogeny class is 4.0.5858832.4. |
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 |
|---|---|---|
| 2.97.ag_dn | $2$ | (not in LMFDB) |