Invariants
Base field: | $\F_{89}$ |
Dimension: | $2$ |
L-polynomial: | $1 - 8 x + 30 x^{2} - 712 x^{3} + 7921 x^{4}$ |
Frobenius angles: | $\pm0.150194194604$, $\pm0.654568097349$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.537920.1 |
Galois group: | $D_{4}$ |
Jacobians: | $348$ |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $7232$ | $62715904$ | $495623951936$ | $3937259297669120$ | $31182858161510297152$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $82$ | $7918$ | $703042$ | $62752926$ | $5584263282$ | $496981260046$ | $44231351411938$ | $3936588999261246$ | $350356403123900818$ | $31181719931495301678$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 348 curves (of which all are hyperelliptic):
- $y^2=63 x^6+73 x^5+60 x^4+64 x^3+81 x^2+46 x+21$
- $y^2=84 x^6+26 x^5+69 x^4+73 x^3+12 x^2+53 x+67$
- $y^2=66 x^6+79 x^5+62 x^4+50 x^3+75 x^2+24 x+1$
- $y^2=52 x^6+6 x^5+31 x^4+51 x^3+34 x^2+56 x+53$
- $y^2=3 x^6+53 x^5+57 x^4+86 x^3+62 x^2+56 x+73$
- $y^2=18 x^6+78 x^5+24 x^4+18 x^3+56 x^2+57 x+28$
- $y^2=27 x^6+38 x^5+78 x^4+31 x^3+68 x^2+35 x+79$
- $y^2=79 x^6+25 x^4+15 x^3+11 x^2+65 x+75$
- $y^2=26 x^6+76 x^5+61 x^4+3 x^3+65 x^2+3 x+68$
- $y^2=84 x^6+87 x^5+14 x^4+29 x^3+50 x^2+84 x+38$
- $y^2=28 x^5+58 x^4+6 x^3+87 x^2+47 x+25$
- $y^2=20 x^6+82 x^5+16 x^4+64 x^3+19 x^2+78 x+35$
- $y^2=73 x^6+38 x^5+59 x^4+62 x^3+21 x^2+24 x+26$
- $y^2=28 x^6+4 x^5+53 x^4+28 x^3+74 x^2+46 x+54$
- $y^2=26 x^6+79 x^5+76 x^4+62 x^3+21 x^2+83 x+14$
- $y^2=58 x^6+6 x^5+75 x^4+58 x^3+10 x^2+56 x+5$
- $y^2=88 x^6+78 x^5+86 x^4+52 x^3+38 x^2+17 x+78$
- $y^2=81 x^6+49 x^5+54 x^4+73 x^3+56 x^2+46 x+86$
- $y^2=12 x^6+33 x^5+76 x^4+44 x^3+64 x^2+18 x+23$
- $y^2=19 x^6+87 x^5+65 x^4+53 x^3+58 x^2+3 x+1$
- and 328 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 4.0.537920.1. |
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.i_be | $2$ | (not in LMFDB) |