Invariants
| Base field: | $\F_{83}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 12 x + 190 x^{2} - 996 x^{3} + 6889 x^{4}$ |
| Frobenius angles: | $\pm0.326151736235$, $\pm0.455554782866$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.2841408.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $294$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6072$ | $49110336$ | $328156922808$ | $2252114360534016$ | $15515525925343673592$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $72$ | $7126$ | $573912$ | $47454574$ | $3938909832$ | $326940005446$ | $27136053063576$ | $2252292222463198$ | $186940255292091720$ | $15516041193939160246$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 294 curves (of which all are hyperelliptic):
- $y^2=31 x^6+16 x^5+10 x^4+11 x^3+8 x^2+71 x+31$
- $y^2=60 x^6+36 x^5+74 x^4+62 x^3+65 x^2+59 x+39$
- $y^2=2 x^6+78 x^5+49 x^4+32 x^3+45 x^2+65 x+63$
- $y^2=70 x^6+22 x^5+54 x^4+72 x^3+80 x^2+55 x+32$
- $y^2=24 x^6+22 x^5+76 x^4+74 x^3+3 x^2+67 x+56$
- $y^2=28 x^6+79 x^5+81 x^4+73 x^3+29 x^2+32 x+17$
- $y^2=11 x^6+38 x^5+20 x^4+45 x^3+26 x^2+10 x+53$
- $y^2=55 x^6+17 x^5+56 x^4+14 x^3+70 x^2+79 x+14$
- $y^2=14 x^6+77 x^5+59 x^4+37 x^3+36 x^2+12 x+18$
- $y^2=70 x^6+2 x^5+6 x^4+44 x^3+14 x^2+46 x+69$
- $y^2=35 x^6+33 x^5+46 x^4+10 x^3+78 x^2+39 x+11$
- $y^2=26 x^6+26 x^5+67 x^4+70 x^3+6 x^2+14 x+76$
- $y^2=74 x^6+15 x^5+48 x^4+23 x^3+43 x^2+35 x+29$
- $y^2=40 x^6+56 x^5+69 x^4+59 x^3+60 x^2+48 x+62$
- $y^2=73 x^6+5 x^5+67 x^4+64 x^3+13 x^2+3 x+15$
- $y^2=2 x^6+19 x^5+57 x^4+73 x^3+6 x^2+79 x+28$
- $y^2=60 x^6+20 x^5+13 x^4+38 x^3+70 x^2+63 x+48$
- $y^2=50 x^6+75 x^5+9 x^4+11 x^3+6 x^2+68 x+22$
- $y^2=52 x^6+31 x^5+27 x^4+41 x^3+81 x^2+77 x+3$
- $y^2=56 x^6+23 x^5+31 x^4+11 x^3+38 x^2+27 x+63$
- and 274 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{83}$.
Endomorphism algebra over $\F_{83}$| The endomorphism algebra of this simple isogeny class is 4.0.2841408.1. |
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 |
|---|---|---|
| 2.83.m_hi | $2$ | (not in LMFDB) |