Invariants
| Base field: | $\F_{79}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 - 11 x + 79 x^{2} )( 1 - x + 79 x^{2} )$ |
| $1 - 12 x + 169 x^{2} - 948 x^{3} + 6241 x^{4}$ | |
| Frobenius angles: | $\pm0.287619798331$, $\pm0.482084212174$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $312$ |
| Cyclic group of points: | yes |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $5451$ | $40179321$ | $243834219216$ | $1517067699208425$ | $9468247249947822171$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $68$ | $6436$ | $494552$ | $38949028$ | $3077047028$ | $243087743806$ | $19203903593852$ | $1517108694172228$ | $119851595836890248$ | $9468276093526124356$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 312 curves (of which all are hyperelliptic):
- $y^2=28 x^6+29 x^5+16 x^4+77 x^3+13 x^2+36 x+44$
- $y^2=63 x^6+30 x^5+54 x^4+59 x^3+66 x^2+10 x+19$
- $y^2=12 x^6+40 x^5+56 x^4+x^3+26 x^2+36 x+27$
- $y^2=76 x^6+68 x^5+21 x^4+33 x^3+69 x^2+43 x+77$
- $y^2=75 x^6+47 x^5+71 x^4+19 x^3+53 x^2+40 x+51$
- $y^2=75 x^6+28 x^5+64 x^4+60 x^3+32 x^2+7 x+39$
- $y^2=13 x^6+17 x^5+26 x^4+25 x^3+42 x^2+65 x+46$
- $y^2=41 x^6+54 x^5+70 x^4+54 x^3+44 x^2+50 x+13$
- $y^2=39 x^6+39 x^5+31 x^4+42 x^3+65 x^2+35 x+53$
- $y^2=36 x^6+33 x^5+57 x^4+40 x^3+44 x^2+78 x+68$
- $y^2=40 x^6+33 x^5+47 x^4+68 x^3+14 x^2+56 x+11$
- $y^2=58 x^6+27 x^5+32 x^4+4 x^3+55 x^2+11 x+76$
- $y^2=44 x^6+44 x^5+47 x^4+43 x^3+74 x^2+59 x+34$
- $y^2=23 x^6+17 x^5+17 x^4+62 x^3+36 x^2+15 x+73$
- $y^2=63 x^6+19 x^5+28 x^4+68 x^3+18 x^2+73 x+74$
- $y^2=58 x^6+35 x^5+29 x^4+25 x^3+53 x^2+31 x+5$
- $y^2=22 x^6+11 x^5+30 x^4+19 x^3+58 x^2+4 x+2$
- $y^2=77 x^6+64 x^5+47 x^4+22 x^3+35 x^2+42 x+63$
- $y^2=75 x^6+9 x^5+53 x^4+8 x^3+34 x^2+21 x+75$
- $y^2=10 x^6+13 x^5+34 x^4+59 x^3+31 x^2+20 x+29$
- and 292 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.al $\times$ 1.79.ab 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.ak_fr | $2$ | (not in LMFDB) |
| 2.79.k_fr | $2$ | (not in LMFDB) |
| 2.79.m_gn | $2$ | (not in LMFDB) |