Invariants
Base field: | $\F_{89}$ |
Dimension: | $2$ |
L-polynomial: | $1 - 6 x + 155 x^{2} - 534 x^{3} + 7921 x^{4}$ |
Frobenius angles: | $\pm0.348275013182$, $\pm0.544971630013$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.6276672.3 |
Galois group: | $D_{4}$ |
Jacobians: | $252$ |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $7537$ | $64946329$ | $497666783488$ | $3936077010127017$ | $31181687733476936497$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $84$ | $8196$ | $705942$ | $62734084$ | $5584053684$ | $496980869550$ | $44231321205204$ | $3936588850419460$ | $350356405918428486$ | $31181719932328020036$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 252 curves (of which all are hyperelliptic):
- $y^2=83 x^6+51 x^5+48 x^4+12 x^3+37 x^2+15 x+32$
- $y^2=30 x^6+61 x^5+60 x^4+49 x^3+72 x^2+64 x+38$
- $y^2=66 x^6+81 x^5+44 x^4+31 x^3+47 x^2+87 x+44$
- $y^2=4 x^6+29 x^5+72 x^4+4 x^3+73 x^2+30 x+43$
- $y^2=9 x^6+22 x^5+48 x^4+61 x^3+22 x^2+8 x+34$
- $y^2=11 x^6+9 x^5+55 x^4+62 x^3+80 x^2+40 x+53$
- $y^2=20 x^6+6 x^5+88 x^4+60 x^3+53 x^2+39 x+55$
- $y^2=50 x^6+53 x^5+68 x^4+58 x^3+16 x^2+58 x+15$
- $y^2=6 x^6+76 x^5+77 x^4+47 x^3+60 x^2+35 x+41$
- $y^2=74 x^6+73 x^5+20 x^4+79 x^3+13 x^2+76 x+12$
- $y^2=64 x^6+56 x^5+6 x^4+50 x^3+5 x^2+37 x+86$
- $y^2=17 x^6+12 x^5+75 x^4+81 x^3+19 x^2+21 x+41$
- $y^2=87 x^6+5 x^5+47 x^4+11 x^3+64 x^2+53 x+48$
- $y^2=76 x^6+26 x^5+13 x^4+9 x^3+7 x^2+34 x+34$
- $y^2=27 x^6+81 x^5+10 x^4+59 x^3+84 x^2+83 x+43$
- $y^2=83 x^6+78 x^5+77 x^4+53 x^3+53 x^2+69 x+9$
- $y^2=54 x^6+48 x^5+86 x^4+81 x^3+6 x^2+41 x+76$
- $y^2=45 x^6+62 x^5+63 x^4+43 x^3+20 x^2+63 x+66$
- $y^2=79 x^6+32 x^5+74 x^4+14 x^3+12 x^2+23 x+60$
- $y^2=63 x^6+5 x^5+52 x^4+54 x^3+41 x^2+30 x+11$
- and 232 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 4.0.6276672.3. |
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.g_fz | $2$ | (not in LMFDB) |