Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 12 x + 122 x^{2} - 948 x^{3} + 6241 x^{4}$ |
| Frobenius angles: | $\pm0.196813363439$, $\pm0.544648534468$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.526336.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $252$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5404$ | $39578896$ | $242999468572$ | $1517078714812416$ | $9468837314875456924$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $68$ | $6342$ | $492860$ | $38949310$ | $3077238788$ | $243088943622$ | $19203904983548$ | $1517108758048894$ | $119851596121080260$ | $9468276077533317702$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 252 curves (of which all are hyperelliptic):
- $y^2=4 x^6+24 x^5+22 x^4+31 x^3+78 x^2+78 x+48$
- $y^2=44 x^6+61 x^5+54 x^4+19 x^3+4 x^2+30 x+60$
- $y^2=47 x^6+66 x^5+38 x^4+29 x^3+23 x^2+18 x+54$
- $y^2=78 x^6+x^5+36 x^4+17 x^3+47 x^2+75 x+54$
- $y^2=45 x^6+9 x^5+2 x^4+67 x^3+15 x^2+78 x+24$
- $y^2=28 x^6+74 x^5+2 x^4+47 x^3+78 x^2+24 x+58$
- $y^2=69 x^6+60 x^5+61 x^4+23 x^3+14 x^2+12 x+44$
- $y^2=13 x^6+36 x^5+58 x^4+76 x^3+22 x^2+58 x+75$
- $y^2=56 x^6+9 x^5+42 x^4+73 x^3+45 x^2+46 x+7$
- $y^2=45 x^6+47 x^5+30 x^4+78 x^3+68 x^2+31 x+20$
- $y^2=19 x^6+38 x^5+68 x^4+76 x^3+78 x^2+63 x+59$
- $y^2=22 x^6+49 x^5+30 x^4+72 x^3+36 x^2+11 x+56$
- $y^2=10 x^6+23 x^5+23 x^4+29 x^3+29 x^2+59 x+12$
- $y^2=71 x^6+21 x^5+14 x^4+16 x^3+20 x^2+29 x+15$
- $y^2=44 x^6+61 x^5+59 x^4+14 x^3+69 x^2+27 x+71$
- $y^2=12 x^6+8 x^5+12 x^4+38 x^3+6 x^2+14 x+47$
- $y^2=18 x^6+4 x^5+66 x^4+74 x^3+67 x^2+46 x+7$
- $y^2=24 x^6+26 x^5+64 x^4+65 x^3+78 x^2+30 x+35$
- $y^2=26 x^6+50 x^5+44 x^4+73 x^3+40 x^2+24 x+14$
- $y^2=39 x^6+6 x^5+29 x^4+21 x^3+56 x^2+31 x+51$
- and 232 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 4.0.526336.1. |
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 |
|---|---|---|
| 2.79.m_es | $2$ | (not in LMFDB) |