Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 12 x + 79 x^{2} )( 1 + 16 x + 79 x^{2} )$ |
| $1 + 4 x - 34 x^{2} + 316 x^{3} + 6241 x^{4}$ | |
| Frobenius angles: | $\pm0.264120855861$, $\pm0.856485067356$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $292$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6528$ | $38436864$ | $243788897664$ | $1517699562209280$ | $9468242864727512448$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $84$ | $6158$ | $494460$ | $38965246$ | $3077045604$ | $243088089806$ | $19203892427916$ | $1517108806478206$ | $119851595300295540$ | $9468276086513412878$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 292 curves (of which all are hyperelliptic):
- $y^2=47 x^6+72 x^5+54 x^4+5 x^3+49 x^2+19 x+62$
- $y^2=41 x^6+11 x^5+66 x^4+45 x^3+66 x^2+11 x+41$
- $y^2=45 x^6+63 x^5+65 x^4+25 x^3+55 x^2+61 x+36$
- $y^2=45 x^6+7 x^5+32 x^4+38 x^3+40 x^2+14 x+72$
- $y^2=67 x^6+5 x^5+38 x^4+31 x^3+65 x^2+11 x+3$
- $y^2=13 x^6+76 x^5+54 x^4+50 x^3+75 x^2+78 x+56$
- $y^2=48 x^6+33 x^5+68 x^4+75 x^3+51 x^2+3 x+63$
- $y^2=34 x^6+63 x^5+66 x^4+28 x^3+60 x^2+60 x+71$
- $y^2=68 x^6+58 x^5+21 x^4+9 x^3+54 x^2+52 x+48$
- $y^2=4 x^6+35 x^5+54 x^4+x^3+52 x^2+26 x+6$
- $y^2=5 x^6+40 x^5+74 x^4+3 x^3+78 x^2+24 x+7$
- $y^2=50 x^6+66 x^5+55 x^4+76 x^3+58 x^2+26 x+10$
- $y^2=71 x^6+33 x^5+65 x^4+53 x^3+74 x^2+62 x+8$
- $y^2=73 x^6+4 x^5+53 x^4+22 x^3+3 x^2+29 x+77$
- $y^2=54 x^6+23 x^5+60 x^4+9 x^3+46 x^2+66 x+14$
- $y^2=33 x^6+65 x^5+15 x^4+29 x^3+25 x^2+48 x+52$
- $y^2=67 x^6+25 x^5+28 x^4+74 x^3+53 x^2+10 x+14$
- $y^2=71 x^6+23 x^5+63 x^4+44 x^3+38 x^2+5 x+26$
- $y^2=61 x^6+78 x^5+44 x^4+39 x^3+24 x^2+70 x$
- $y^2=38 x^6+23 x^5+6 x^4+26 x^3+45 x^2+59 x+66$
- and 272 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{79}$.
Endomorphism algebra over $\F_{79}$| The isogeny class factors as 1.79.am $\times$ 1.79.q and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
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.abc_nm | $2$ | (not in LMFDB) |
| 2.79.ae_abi | $2$ | (not in LMFDB) |
| 2.79.bc_nm | $2$ | (not in LMFDB) |