Invariants
Base field: | $\F_{79}$ |
Dimension: | $2$ |
L-polynomial: | $1 + 12 x + 176 x^{2} + 948 x^{3} + 6241 x^{4}$ |
Frobenius angles: | $\pm0.531519339295$, $\pm0.695462558533$ |
Angle rank: | $2$ (numerical) |
Number field: | 4.0.86272.3 |
Galois group: | $D_{4}$ |
Jacobians: | $168$ |
Isomorphism classes: | 168 |
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
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
---|---|---|---|---|---|
$A(\F_{q^r})$ | $7378$ | $40269124$ | $242219275186$ | $1517036640972048$ | $9468462595739929138$ |
$r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
---|---|---|---|---|---|---|---|---|---|---|
$C(\F_{q^r})$ | $92$ | $6450$ | $491276$ | $38948230$ | $3077117012$ | $243087428274$ | $19203911410244$ | $1517108739711358$ | $119851596045873596$ | $9468276092094162930$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 168 curves (of which all are hyperelliptic):
- $y^2=43 x^6+61 x^5+53 x^4+30 x^3+18 x^2+17 x+73$
- $y^2=57 x^6+69 x^5+70 x^4+12 x^3+19 x^2+72 x+24$
- $y^2=67 x^6+55 x^5+35 x^4+57 x^3+29 x^2+52 x+15$
- $y^2=38 x^6+52 x^5+37 x^4+6 x^3+10 x^2+39 x+35$
- $y^2=2 x^6+49 x^5+24 x^4+17 x^3+51 x^2+9 x+40$
- $y^2=32 x^6+11 x^5+42 x^4+55 x^3+60 x^2+56 x+19$
- $y^2=15 x^6+11 x^5+20 x^4+52 x^2+16 x+20$
- $y^2=72 x^6+27 x^5+9 x^4+27 x^3+48 x^2+68 x+67$
- $y^2=5 x^5+4 x^4+49 x^3+59 x^2+x+59$
- $y^2=7 x^6+61 x^5+50 x^4+40 x^3+55 x^2+16 x+52$
- $y^2=7 x^6+37 x^5+76 x^4+68 x^3+5 x^2+54 x+1$
- $y^2=76 x^6+64 x^5+39 x^4+32 x^3+40 x^2+40 x+30$
- $y^2=62 x^6+53 x^5+18 x^4+76 x^3+9 x^2+x+35$
- $y^2=71 x^6+2 x^5+46 x^4+32 x^3+63 x^2+32 x+34$
- $y^2=18 x^6+6 x^5+72 x^4+49 x^3+33 x^2+23 x+16$
- $y^2=73 x^6+47 x^5+20 x^4+66 x^3+29 x^2+55 x+31$
- $y^2=42 x^6+71 x^5+22 x^4+46 x^3+68 x^2+39 x+59$
- $y^2=56 x^6+10 x^5+49 x^4+47 x^3+44 x^2+45$
- $y^2=37 x^6+65 x^5+36 x^4+29 x^3+73 x^2+10 x$
- $y^2=27 x^6+3 x^5+75 x^4+67 x^3+58 x^2+53 x+5$
- and 148 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 4.0.86272.3. |
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.am_gu | $2$ | (not in LMFDB) |