Invariants
| Base field: | $\F_{83}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 20 x + 214 x^{2} + 1660 x^{3} + 6889 x^{4}$ |
| Frobenius angles: | $\pm0.548912980956$, $\pm0.893532509847$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.122525.3 |
| Galois group: | $D_{4}$ |
| Jacobians: | $184$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $8784$ | $47644416$ | $327021020496$ | $2251607254511616$ | $15516334652501459664$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $104$ | $6918$ | $571928$ | $47443886$ | $3939115144$ | $326941547382$ | $27136034565688$ | $2252292285158878$ | $186940255259776424$ | $15516041195190859878$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 184 curves (of which all are hyperelliptic):
- $y^2=11 x^6+47 x^4+64 x^3+72 x^2+12 x+22$
- $y^2=66 x^6+60 x^5+70 x^4+67 x^3+14 x^2+2 x+66$
- $y^2=74 x^6+35 x^5+79 x^4+73 x^3+68 x^2+10 x+37$
- $y^2=49 x^6+43 x^5+44 x^4+30 x^3+7 x^2+74 x+19$
- $y^2=15 x^6+10 x^5+13 x^4+60 x^3+32 x^2+44 x+14$
- $y^2=31 x^6+80 x^5+47 x^4+16 x^3+3 x^2+2 x+7$
- $y^2=75 x^6+67 x^5+37 x^4+72 x^3+28 x^2+32 x+60$
- $y^2=8 x^6+71 x^4+17 x^3+29 x^2+54 x+69$
- $y^2=56 x^6+35 x^5+2 x^4+22 x^3+65 x^2+52 x+54$
- $y^2=47 x^6+78 x^5+56 x^4+22 x^3+18 x^2+22 x+60$
- $y^2=10 x^6+31 x^5+3 x^4+35 x^3+81 x^2+48 x+75$
- $y^2=80 x^6+74 x^5+53 x^4+26 x^3+21 x^2+66 x+4$
- $y^2=46 x^6+40 x^5+17 x^4+5 x^3+80 x^2+20 x+57$
- $y^2=69 x^6+39 x^5+74 x^4+80 x^3+65 x^2+22 x+3$
- $y^2=29 x^6+42 x^5+2 x^4+60 x^3+29 x^2+80 x+68$
- $y^2=78 x^6+27 x^5+37 x^4+62 x^3+57 x^2+2 x+30$
- $y^2=41 x^6+37 x^5+22 x^4+63 x^3+54 x^2+82 x+76$
- $y^2=44 x^6+44 x^5+80 x^4+14 x^3+7 x^2+64 x+23$
- $y^2=52 x^6+15 x^5+x^4+57 x^3+39 x^2+63 x+9$
- $y^2=27 x^6+4 x^5+24 x^4+48 x^3+3 x^2+58 x+11$
- and 164 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 4.0.122525.3. |
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 |
|---|---|---|
| 2.83.au_ig | $2$ | (not in LMFDB) |