Invariants
Base field: | $\F_{79}$ |
Dimension: | $2$ |
L-polynomial: | $1 + 4 x + 142 x^{2} + 316 x^{3} + 6241 x^{4}$ |
Frobenius angles: | $\pm0.455589173983$, $\pm0.618618611759$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.132725.1 |
Galois group: | $D_{4}$ |
Jacobians: | $230$ |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $6704$ | $40653056$ | $242746537136$ | $1516657544843264$ | $9468383667410069424$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $84$ | $6510$ | $492348$ | $38938494$ | $3077091364$ | $243087507246$ | $19203911794956$ | $1517108852598654$ | $119851595178445812$ | $9468276078570871150$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 230 curves (of which all are hyperelliptic):
- $y^2=70 x^6+6 x^4+58 x^3+17 x^2+73 x+59$
- $y^2=7 x^6+48 x^5+61 x^4+6 x^3+49 x^2+37 x+70$
- $y^2=28 x^6+6 x^5+34 x^4+50 x^3+15 x^2+67 x+2$
- $y^2=77 x^6+15 x^5+5 x^4+58 x^3+44 x^2+18 x+59$
- $y^2=30 x^6+14 x^5+45 x^4+72 x^3+8 x^2+54 x+63$
- $y^2=10 x^6+18 x^5+19 x^4+8 x^3+5 x^2+53 x+59$
- $y^2=34 x^6+53 x^5+15 x^4+73 x^3+76 x^2+32 x+28$
- $y^2=24 x^5+x^4+34 x^3+70 x+29$
- $y^2=59 x^6+44 x^4+74 x^3+27 x^2+77 x+35$
- $y^2=58 x^6+69 x^5+2 x^4+7 x^2+15 x+74$
- $y^2=56 x^6+4 x^5+67 x^4+18 x^3+41 x^2+35 x+26$
- $y^2=8 x^6+78 x^5+60 x^4+58 x^3+17 x^2+6 x+11$
- $y^2=56 x^6+48 x^5+78 x^4+18 x^3+43 x^2+37 x+67$
- $y^2=10 x^6+34 x^5+32 x^4+16 x^3+x^2+77 x+78$
- $y^2=40 x^6+29 x^5+68 x^4+20 x^3+3 x^2+76 x+76$
- $y^2=40 x^6+20 x^5+75 x^4+24 x^3+57 x^2+52 x+48$
- $y^2=65 x^6+2 x^5+28 x^4+4 x^3+22 x^2+77 x+40$
- $y^2=70 x^6+72 x^5+44 x^4+9 x^3+67 x^2+66 x+50$
- $y^2=17 x^6+4 x^5+45 x^4+37 x^3+11 x^2+63 x+78$
- $y^2=51 x^6+22 x^5+7 x^4+47 x^3+31 x^2+22 x+13$
- and 210 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 4.0.132725.1. |
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.ae_fm | $2$ | (not in LMFDB) |