Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 2 x + 132 x^{2} + 158 x^{3} + 6241 x^{4}$ |
| Frobenius angles: | $\pm0.424146424303$, $\pm0.613329515734$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.1325376.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $208$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6534$ | $40602276$ | $242934466302$ | $1516756324848336$ | $9468292884479275374$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $82$ | $6502$ | $492730$ | $38941030$ | $3077061862$ | $243087065782$ | $19203912409582$ | $1517108910135934$ | $119851595357758450$ | $9468276072537756502$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 208 curves (of which all are hyperelliptic):
- $y^2=47 x^6+22 x^5+43 x^4+8 x^3+30 x^2+41 x+59$
- $y^2=51 x^6+17 x^5+18 x^4+23 x^3+17 x^2+28 x+44$
- $y^2=41 x^6+8 x^5+51 x^4+55 x^3+44 x^2+28 x+12$
- $y^2=62 x^6+22 x^5+47 x^4+16 x^3+77 x^2+65 x+41$
- $y^2=18 x^6+25 x^5+66 x^4+8 x^3+47 x^2+55 x+20$
- $y^2=55 x^6+27 x^5+17 x^4+46 x^3+35 x^2+x+75$
- $y^2=40 x^6+68 x^5+32 x^4+47 x^3+17 x^2+22 x+12$
- $y^2=64 x^6+64 x^5+48 x^4+56 x^3+63 x^2+30 x+36$
- $y^2=8 x^6+55 x^5+44 x^4+67 x^3+71 x^2+77 x+55$
- $y^2=29 x^6+7 x^5+32 x^4+14 x^3+39 x^2+33 x+35$
- $y^2=4 x^6+35 x^5+52 x^4+55 x^3+7 x^2+72 x+55$
- $y^2=32 x^6+25 x^5+23 x^4+18 x^3+27 x^2+67 x+45$
- $y^2=65 x^6+23 x^5+x^4+77 x^3+71 x^2+73 x+71$
- $y^2=69 x^6+52 x^5+12 x^4+43 x^3+19 x^2+53 x+34$
- $y^2=77 x^6+26 x^5+64 x^4+49 x^3+74 x^2+57 x+12$
- $y^2=76 x^6+60 x^5+23 x^4+57 x^3+2 x^2+35 x+43$
- $y^2=36 x^6+31 x^5+26 x^4+25 x^3+76 x^2+57 x+55$
- $y^2=3 x^6+52 x^5+18 x^4+30 x^3+42 x^2+24 x+6$
- $y^2=46 x^6+34 x^5+6 x^4+64 x^3+5 x^2+30 x+30$
- $y^2=71 x^6+71 x^5+57 x^4+58 x^3+61 x^2+12 x+55$
- and 188 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{79}$.
Endomorphism algebra over $\F_{79}$| The endomorphism algebra of this simple isogeny class is 4.0.1325376.2. |
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.ac_fc | $2$ | (not in LMFDB) |