Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 12 x + 79 x^{2} )( 1 + 12 x + 79 x^{2} )$ |
| $1 + 14 x^{2} + 6241 x^{4}$ | |
| Frobenius angles: | $\pm0.264120855861$, $\pm0.735879144139$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $377$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6256$ | $39137536$ | $243087196144$ | $1518066120167424$ | $9468276085268264176$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $80$ | $6270$ | $493040$ | $38974654$ | $3077056400$ | $243086936766$ | $19203908986160$ | $1517108663815294$ | $119851595982618320$ | $9468276087909681150$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 377 curves (of which all are hyperelliptic):
- $y^2=50 x^6+64 x^4+34 x^2+7$
- $y^2=31 x^6+33 x^4+20 x^2+47$
- $y^2=60 x^6+24 x^5+60 x^4+2 x^3+61 x^2+27 x+40$
- $y^2=22 x^6+72 x^5+22 x^4+6 x^3+25 x^2+2 x+41$
- $y^2=72 x^6+46 x^5+55 x^4+14 x^3+67 x^2+74 x+41$
- $y^2=58 x^6+59 x^5+7 x^4+42 x^3+43 x^2+64 x+44$
- $y^2=41 x^6+67 x^5+58 x^4+4 x^3+52 x^2+18 x+9$
- $y^2=63 x^6+57 x^5+61 x^4+10 x^3+9 x^2+42 x+60$
- $y^2=31 x^6+13 x^5+25 x^4+30 x^3+27 x^2+47 x+22$
- $y^2=76 x^6+46 x^5+39 x^4+26 x^3+63 x^2+28 x+29$
- $y^2=11 x^6+8 x^5+51 x^4+58 x^3+68 x^2+23 x+29$
- $y^2=21 x^6+51 x^5+41 x^4+71 x^3+64 x^2+75 x+24$
- $y^2=63 x^6+74 x^5+44 x^4+55 x^3+34 x^2+67 x+72$
- $y^2=73 x^6+7 x^5+50 x^4+23 x^3+16 x^2+35 x+56$
- $y^2=61 x^6+21 x^5+71 x^4+69 x^3+48 x^2+26 x+10$
- $y^2=52 x^6+46 x^5+10 x^4+68 x^3+3 x^2+31 x+27$
- $y^2=6 x^6+64 x^5+19 x^4+62 x^3+55 x^2+23 x+64$
- $y^2=18 x^6+34 x^5+57 x^4+28 x^3+7 x^2+69 x+34$
- $y^2=35 x^6+58 x^5+11 x^4+74 x^3+20 x^2+32 x+5$
- $y^2=26 x^6+16 x^5+33 x^4+64 x^3+60 x^2+17 x+15$
- and 357 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{79^{2}}$.
Endomorphism algebra over $\F_{79}$| The isogeny class factors as 1.79.am $\times$ 1.79.m and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
| The base change of $A$ to $\F_{79^{2}}$ is 1.6241.o 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-43}) \)$)$ |
Base change
This is a primitive isogeny class.