Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 25 x^{2} + 6241 x^{4}$ |
| Frobenius angles: | $\pm0.275289025372$, $\pm0.724710974628$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{133}, \sqrt{-183})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $360$ |
| Cyclic group of points: | yes |
This isogeny class is simple but not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6267$ | $39275289$ | $243087003072$ | $1518032690639721$ | $9468276087017794827$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $80$ | $6292$ | $493040$ | $38973796$ | $3077056400$ | $243086550622$ | $19203908986160$ | $1517108684529988$ | $119851595982618320$ | $9468276091408742452$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 360 curves (of which all are hyperelliptic):
- $y^2=72 x^6+26 x^5+58 x^4+31 x^3+39 x^2+46 x+36$
- $y^2=58 x^6+78 x^5+16 x^4+14 x^3+38 x^2+59 x+29$
- $y^2=34 x^6+20 x^5+16 x^4+45 x^3+65 x^2+10 x+37$
- $y^2=23 x^6+60 x^5+48 x^4+56 x^3+37 x^2+30 x+32$
- $y^2=51 x^6+51 x^5+67 x^4+63 x^3+50 x^2+51 x+68$
- $y^2=74 x^6+74 x^5+43 x^4+31 x^3+71 x^2+74 x+46$
- $y^2=60 x^6+64 x^5+62 x^4+36 x^2+2 x+61$
- $y^2=22 x^6+34 x^5+28 x^4+29 x^2+6 x+25$
- $y^2=57 x^6+58 x^5+48 x^4+50 x^3+4 x^2+7 x+14$
- $y^2=13 x^6+16 x^5+65 x^4+71 x^3+12 x^2+21 x+42$
- $y^2=46 x^6+64 x^5+55 x^4+19 x^3+46 x^2+53 x+27$
- $y^2=59 x^6+34 x^5+7 x^4+57 x^3+59 x^2+x+2$
- $y^2=71 x^6+40 x^5+61 x^4+50 x^3+58 x^2+51 x+18$
- $y^2=55 x^6+41 x^5+25 x^4+71 x^3+16 x^2+74 x+54$
- $y^2=17 x^6+2 x^5+63 x^4+40 x^3+20 x^2+x+39$
- $y^2=51 x^6+6 x^5+31 x^4+41 x^3+60 x^2+3 x+38$
- $y^2=57 x^6+70 x^5+21 x^4+12 x^3+25 x^2+38 x+11$
- $y^2=13 x^6+52 x^5+63 x^4+36 x^3+75 x^2+35 x+33$
- $y^2=62 x^6+12 x^5+43 x^4+56 x^3+72 x^2+9 x+55$
- $y^2=28 x^6+36 x^5+50 x^4+10 x^3+58 x^2+27 x+7$
- and 340 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{79^{2}}$.
Endomorphism algebra over $\F_{79}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{133}, \sqrt{-183})\). |
| The base change of $A$ to $\F_{79^{2}}$ is 1.6241.z 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-24339}) \)$)$ |
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 |
|---|---|---|
| 2.79.a_az | $4$ | (not in LMFDB) |