Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 10 x + 126 x^{2} - 790 x^{3} + 6241 x^{4}$ |
| Frobenius angles: | $\pm0.250505323482$, $\pm0.545816213113$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.39845736.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $384$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5568$ | $39911424$ | $243290001600$ | $1517187124690944$ | $9468740576135502528$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $70$ | $6394$ | $493450$ | $38952094$ | $3077207350$ | $243088086778$ | $19203895309690$ | $1517108700297214$ | $119851596166373350$ | $9468276083531095354$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 384 curves (of which all are hyperelliptic):
- $y^2=43 x^6+62 x^5+57 x^4+24 x^3+39 x^2+30 x+21$
- $y^2=63 x^6+38 x^5+46 x^4+45 x^3+59 x^2+14 x+14$
- $y^2=36 x^6+16 x^5+76 x^4+6 x^2+40 x+70$
- $y^2=14 x^6+35 x^5+58 x^4+56 x^3+78 x^2+47 x+58$
- $y^2=22 x^6+44 x^5+26 x^4+34 x^3+77 x^2+73 x+71$
- $y^2=42 x^6+48 x^5+29 x^4+19 x^3+62 x^2+33 x+28$
- $y^2=69 x^6+51 x^5+68 x^4+61 x^3+53 x^2+70 x+1$
- $y^2=17 x^6+13 x^5+24 x^4+28 x^3+47 x^2+48 x+70$
- $y^2=5 x^5+72 x^4+23 x^3+59 x^2+60 x+15$
- $y^2=30 x^6+57 x^5+2 x^4+11 x^3+35 x^2+51 x+21$
- $y^2=56 x^6+27 x^5+72 x^4+74 x^3+5 x^2+75 x+47$
- $y^2=54 x^6+9 x^5+69 x^4+54 x^3+58 x^2+62 x$
- $y^2=45 x^6+5 x^5+43 x^4+38 x^3+47 x^2+32 x+71$
- $y^2=5 x^6+8 x^5+60 x^4+32 x^3+58 x^2+74 x+23$
- $y^2=15 x^6+43 x^5+60 x^4+10 x^3+23 x^2+72 x+17$
- $y^2=46 x^6+63 x^5+46 x^4+68 x^3+56 x^2+25 x+17$
- $y^2=65 x^6+57 x^5+5 x^4+39 x^3+20 x^2+44 x+41$
- $y^2=32 x^6+58 x^5+74 x^4+78 x^3+9 x^2+34 x+68$
- $y^2=6 x^6+49 x^5+35 x^4+78 x^3+64 x^2+20 x+3$
- $y^2=44 x^6+72 x^5+40 x^4+32 x^3+68 x^2+73 x+22$
- and 364 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 4.0.39845736.2. |
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.k_ew | $2$ | (not in LMFDB) |