Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 8 x + 126 x^{2} + 632 x^{3} + 6241 x^{4}$ |
| Frobenius angles: | $\pm0.447326561391$, $\pm0.710746913472$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.543888.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $432$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $7008$ | $40141824$ | $242783869536$ | $1517153494253568$ | $9467967424621704288$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $88$ | $6430$ | $492424$ | $38951230$ | $3076956088$ | $243087329374$ | $19203925753576$ | $1517108747894398$ | $119851595071793944$ | $9468276087917257630$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 432 curves (of which all are hyperelliptic):
- $y^2=45 x^6+38 x^5+9 x^4+15 x^3+50 x^2+17 x+72$
- $y^2=50 x^6+66 x^5+61 x^4+15 x^3+33 x^2+67 x+16$
- $y^2=70 x^6+36 x^5+x^4+12 x^3+7 x^2+6 x+53$
- $y^2=4 x^6+70 x^5+37 x^4+34 x^3+12 x^2+31 x+4$
- $y^2=68 x^6+14 x^5+72 x^4+37 x^3+5 x^2+41 x+51$
- $y^2=38 x^6+11 x^5+57 x^4+69 x^3+37 x^2+16 x+67$
- $y^2=35 x^6+20 x^5+74 x^4+55 x^3+35 x^2+18 x+29$
- $y^2=73 x^6+73 x^5+69 x^4+3 x^3+52 x^2+74 x$
- $y^2=26 x^6+45 x^5+77 x^4+30 x^3+72 x^2+48 x+37$
- $y^2=61 x^6+44 x^5+44 x^4+4 x^3+14 x^2+20 x+42$
- $y^2=5 x^6+x^5+63 x^4+21 x^3+42 x^2+7 x+64$
- $y^2=24 x^6+64 x^5+64 x^4+59 x^3+65 x^2+19 x+4$
- $y^2=78 x^6+52 x^5+70 x^4+33 x^3+41 x^2+60 x+22$
- $y^2=39 x^6+39 x^5+69 x^4+70 x^3+43 x^2+20 x+9$
- $y^2=76 x^6+71 x^5+66 x^4+5 x^3+40 x^2+37 x+17$
- $y^2=27 x^6+47 x^5+23 x^4+7 x^3+74 x^2+55 x+55$
- $y^2=32 x^6+16 x^5+59 x^4+34 x^3+24 x^2+64 x+11$
- $y^2=35 x^6+35 x^5+71 x^4+74 x^3+51 x^2+50 x+19$
- $y^2=72 x^6+60 x^5+13 x^4+52 x^3+34 x^2+61 x+67$
- $y^2=49 x^6+33 x^5+24 x^4+74 x^3+62 x^2+44$
- and 412 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 4.0.543888.2. |
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.ai_ew | $2$ | (not in LMFDB) |