Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 20 x + 234 x^{2} + 1460 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.624931471405$, $\pm0.788845564183$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-120 -50 \sqrt{3}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $112$ |
| Isomorphism classes: | 144 |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $7044$ | $28767696$ | $150689819556$ | $806727205671936$ | $4297614424408796964$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $94$ | $5398$ | $387358$ | $28407646$ | $2073066094$ | $151334196982$ | $11047395508558$ | $806460116879038$ | $58871586985134334$ | $4297625822871320278$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 112 curves (of which all are hyperelliptic):
- $y^2=16 x^6+70 x^5+25 x^4+19 x^3+34 x^2+65 x+7$
- $y^2=31 x^6+38 x^5+52 x^4+45 x^3+56 x^2+23 x+12$
- $y^2=43 x^6+69 x^5+24 x^4+61 x^3+20 x^2+14 x+55$
- $y^2=62 x^6+31 x^5+55 x^4+69 x^3+18 x^2+23 x+64$
- $y^2=30 x^6+58 x^5+61 x^4+3 x^3+53 x^2+65 x+49$
- $y^2=3 x^6+3 x^5+49 x^4+55 x^3+5 x^2+19 x+50$
- $y^2=32 x^6+8 x^5+21 x^4+45 x^3+53 x^2+44 x+12$
- $y^2=42 x^6+13 x^5+57 x^4+70 x^3+22 x^2+69 x+35$
- $y^2=48 x^6+33 x^5+69 x^4+40 x^3+56 x^2+54 x+61$
- $y^2=33 x^6+2 x^5+19 x^4+30 x^3+31 x^2+69 x+35$
- $y^2=63 x^6+4 x^5+40 x^4+24 x^3+72 x^2+71 x+3$
- $y^2=55 x^6+13 x^5+53 x^4+14 x^3+3 x^2+58 x+54$
- $y^2=29 x^6+22 x^5+51 x^4+35 x^3+29 x^2+35 x+6$
- $y^2=41 x^6+6 x^5+37 x^4+40 x^3+18 x^2+26 x+27$
- $y^2=22 x^6+12 x^5+30 x^4+62 x^3+37 x^2+70 x+10$
- $y^2=11 x^6+22 x^5+26 x^4+63 x^3+70 x^2+3 x+70$
- $y^2=23 x^6+70 x^5+60 x^4+x^3+17 x^2+72 x+46$
- $y^2=48 x^6+6 x^5+61 x^4+37 x^3+57 x^2+24 x+56$
- $y^2=19 x^6+24 x^5+14 x^3+40 x^2+19 x+60$
- $y^2=66 x^6+70 x^5+42 x^4+24 x^2+39 x+62$
- and 92 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{73}$.
Endomorphism algebra over $\F_{73}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-120 -50 \sqrt{3}})\). |
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 |
|---|---|---|
| 2.73.au_ja | $2$ | (not in LMFDB) |