Invariants
| Base field: | $\F_{97}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 6 x + 172 x^{2} + 582 x^{3} + 9409 x^{4}$ |
| Frobenius angles: | $\pm0.458387176259$, $\pm0.643238317707$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.204992832.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $240$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $10170$ | $91468980$ | $831937496490$ | $7836368871531600$ | $73742683243157429850$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $104$ | $9718$ | $911540$ | $88517254$ | $8587371764$ | $832971646726$ | $80798298878408$ | $7837433664421246$ | $760231055669483720$ | $73742412690345068518$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 240 curves (of which all are hyperelliptic):
- $y^2=61 x^6+95 x^5+38 x^4+33 x^3+33 x^2+68 x+91$
- $y^2=72 x^6+23 x^5+74 x^4+67 x^3+76 x^2+82 x+12$
- $y^2=72 x^6+74 x^5+69 x^4+95 x^3+81 x^2+35 x+72$
- $y^2=6 x^6+64 x^5+75 x^4+73 x^3+35 x^2+87 x+60$
- $y^2=36 x^6+61 x^5+82 x^4+26 x^3+43 x^2+46 x+80$
- $y^2=16 x^6+3 x^5+47 x^4+96 x^3+29 x^2+10 x+84$
- $y^2=6 x^6+93 x^5+75 x^4+14 x^3+50 x^2+30 x+72$
- $y^2=75 x^6+23 x^5+32 x^4+58 x^3+26 x^2+58 x+9$
- $y^2=49 x^6+7 x^5+56 x^4+15 x^3+5 x^2+22 x+51$
- $y^2=33 x^6+92 x^5+60 x^4+86 x^3+2 x^2+24 x+26$
- $y^2=15 x^6+9 x^5+71 x^4+69 x^3+89 x^2+91 x+34$
- $y^2=43 x^6+30 x^5+86 x^4+35 x^3+76 x^2+37 x+50$
- $y^2=43 x^6+80 x^5+66 x^4+78 x^3+64 x^2+29 x+48$
- $y^2=46 x^6+76 x^5+47 x^4+32 x^3+19 x^2+51 x+23$
- $y^2=41 x^6+70 x^5+46 x^4+88 x^3+40 x^2+72 x+6$
- $y^2=81 x^6+54 x^5+51 x^4+51 x^3+30 x^2+60 x+19$
- $y^2=74 x^6+5 x^5+25 x^4+27 x^3+74 x^2+90 x$
- $y^2=75 x^6+52 x^5+43 x^4+67 x^3+68 x^2+69 x+7$
- $y^2=30 x^6+73 x^5+67 x^4+42 x^3+75 x^2+48 x+36$
- $y^2=20 x^6+58 x^5+26 x^4+53 x^3+68 x^2+40 x+91$
- and 220 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 4.0.204992832.2. |
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 |
|---|---|---|
| 2.97.ag_gq | $2$ | (not in LMFDB) |