Invariants
Base field: | $\F_{97}$ |
Dimension: | $2$ |
L-polynomial: | $1 + x + 156 x^{2} + 97 x^{3} + 9409 x^{4}$ |
Frobenius angles: | $\pm0.406811956251$, $\pm0.610211197089$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.137853.1 |
Galois group: | $D_{4}$ |
Jacobians: | $384$ |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $9664$ | $91498752$ | $832810778368$ | $7836477592126464$ | $73742401346251186624$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $99$ | $9721$ | $912498$ | $88518481$ | $8587338939$ | $832970782078$ | $80798288610411$ | $7837433882764129$ | $760231057852566834$ | $73742412656411408041$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 384 curves (of which all are hyperelliptic):
- $y^2=2 x^6+71 x^5+2 x^4+62 x^3+77 x^2+63 x+60$
- $y^2=89 x^6+29 x^5+81 x^4+2 x^3+23 x^2+43 x+93$
- $y^2=90 x^6+61 x^5+74 x^4+66 x^3+82 x^2+78 x+92$
- $y^2=34 x^6+2 x^5+57 x^4+15 x^3+58 x^2+21$
- $y^2=35 x^6+93 x^5+8 x^4+76 x^3+7 x^2+91 x+30$
- $y^2=36 x^6+50 x^5+78 x^4+3 x^3+68 x^2+63 x+42$
- $y^2=86 x^6+32 x^5+46 x^4+89 x^3+35 x^2+89 x+56$
- $y^2=65 x^6+37 x^5+2 x^4+24 x^3+92 x^2+75 x+70$
- $y^2=79 x^6+48 x^5+90 x^4+93 x^3+9 x^2+6 x+43$
- $y^2=92 x^6+66 x^5+59 x^4+5 x^3+61 x^2+63 x+23$
- $y^2=34 x^6+84 x^5+48 x^4+21 x^3+36 x^2+2 x+20$
- $y^2=73 x^6+51 x^5+32 x^4+81 x^3+68 x^2+21 x+12$
- $y^2=66 x^6+96 x^5+46 x^4+84 x^3+32 x^2+14 x+85$
- $y^2=33 x^6+86 x^5+73 x^4+80 x^3+79 x^2+23 x+66$
- $y^2=44 x^6+87 x^5+14 x^4+80 x^3+96 x^2+74 x+24$
- $y^2=66 x^6+13 x^5+87 x^4+27 x^3+65 x^2+24 x+89$
- $y^2=77 x^6+45 x^5+20 x^4+57 x^3+43 x^2+67 x+28$
- $y^2=95 x^6+51 x^5+58 x^4+16 x^3+93 x^2+71 x+52$
- $y^2=49 x^6+8 x^5+29 x^4+9 x^2+x$
- $y^2=56 x^6+64 x^5+12 x^4+12 x^3+7 x^2+40 x+91$
- and 364 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 4.0.137853.1. |
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.ab_ga | $2$ | (not in LMFDB) |