Invariants
| Base field: | $\F_{97}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 2 x + 83 x^{2} - 194 x^{3} + 9409 x^{4}$ |
| Frobenius angles: | $\pm0.299900545329$, $\pm0.661727871621$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.6548752.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $280$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $9297$ | $90078633$ | $832886397072$ | $7839524783712969$ | $73743315390731098737$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $96$ | $9572$ | $912582$ | $88552900$ | $8587445376$ | $832968712766$ | $80798274616512$ | $7837433646074500$ | $760231057948738182$ | $73742412712853096612$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 280 curves (of which all are hyperelliptic):
- $y^2=47 x^6+57 x^5+93 x^4+64 x^3+61 x^2+38 x+19$
- $y^2=88 x^6+48 x^5+96 x^4+28 x^3+24 x^2+43 x+75$
- $y^2=91 x^6+87 x^4+70 x^3+95 x^2+48 x+48$
- $y^2=70 x^6+84 x^5+86 x^4+41 x^3+13 x^2+56 x+39$
- $y^2=18 x^6+73 x^5+70 x^4+80 x^3+3 x^2+10 x+76$
- $y^2=63 x^6+46 x^5+28 x^4+65 x^3+55 x^2+56 x+55$
- $y^2=87 x^6+64 x^5+8 x^4+9 x^3+12 x^2+94 x+21$
- $y^2=92 x^6+27 x^5+51 x^4+25 x^3+93 x^2+49 x+95$
- $y^2=62 x^6+57 x^5+66 x^4+40 x^3+47 x^2+27 x+49$
- $y^2=47 x^6+29 x^5+65 x^4+4 x^3+14 x^2+16 x+83$
- $y^2=87 x^6+94 x^5+69 x^4+8 x^3+60 x^2+6 x+67$
- $y^2=36 x^6+45 x^4+89 x^3+74 x^2+79 x+56$
- $y^2=53 x^6+65 x^5+94 x^4+43 x^3+71 x^2+28 x+76$
- $y^2=76 x^6+33 x^5+67 x^4+21 x^3+26 x^2+90 x+55$
- $y^2=3 x^6+56 x^5+5 x^4+48 x^3+22 x^2+42 x+93$
- $y^2=5 x^6+86 x^5+67 x^4+33 x^3+96 x^2+87 x+52$
- $y^2=87 x^6+71 x^5+72 x^4+11 x^3+15 x^2+12 x+22$
- $y^2=66 x^6+76 x^5+21 x^4+91 x^3+88 x^2+8 x+13$
- $y^2=62 x^6+16 x^5+33 x^4+57 x^3+22 x^2+82 x+10$
- $y^2=55 x^6+38 x^5+71 x^4+44 x^3+32 x^2+95 x+61$
- and 260 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 4.0.6548752.1. |
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 |
|---|---|---|
| 2.97.c_df | $2$ | (not in LMFDB) |