Invariants
| Base field: | $\F_{73}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 8 x + 150 x^{2} + 584 x^{3} + 5329 x^{4}$ |
| Frobenius angles: | $\pm0.509984179142$, $\pm0.643889497353$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-60 +29 \sqrt{3}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $140$ |
| Isomorphism classes: | 220 |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $6072$ | $29679936$ | $150815419128$ | $806231005172736$ | $4297800984521907192$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $82$ | $5566$ | $387682$ | $28390174$ | $2073156082$ | $151334283166$ | $11047397222146$ | $806460087391678$ | $58871586455377810$ | $4297625832856366846$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 140 curves (of which all are hyperelliptic):
- $y^2=8 x^6+56 x^5+21 x^4+70 x^3+22 x+6$
- $y^2=34 x^5+46 x^4+54 x^3+72 x^2+48 x+54$
- $y^2=15 x^6+61 x^5+68 x^4+22 x^3+43 x^2+x+35$
- $y^2=18 x^6+68 x^5+49 x^4+65 x^3+24 x^2+19 x+3$
- $y^2=22 x^6+51 x^5+67 x^4+21 x^3+52 x^2+38 x+68$
- $y^2=10 x^6+54 x^5+9 x^4+5 x^3+19 x^2+12 x+4$
- $y^2=49 x^6+19 x^5+32 x^4+47 x^3+63 x^2+70 x+66$
- $y^2=25 x^6+13 x^5+62 x^4+33 x^3+60 x^2+12 x+70$
- $y^2=55 x^6+27 x^5+63 x^4+65 x^3+38 x^2+67 x+12$
- $y^2=5 x^6+23 x^5+35 x^4+62 x^3+15 x^2+41 x+41$
- $y^2=14 x^6+38 x^5+24 x^4+57 x^3+72 x^2+37 x+59$
- $y^2=64 x^6+18 x^5+20 x^4+52 x^3+26 x^2+62 x+16$
- $y^2=18 x^6+29 x^5+72 x^4+19 x^3+25 x^2+10 x+49$
- $y^2=11 x^6+10 x^5+32 x^4+50 x^3+26 x^2+60 x+49$
- $y^2=70 x^6+14 x^5+38 x^4+69 x^3+48 x^2+19 x+32$
- $y^2=5 x^6+24 x^5+33 x^4+7 x^3+69 x^2+54 x+55$
- $y^2=40 x^6+24 x^5+68 x^4+38 x^3+16 x^2+26 x+67$
- $y^2=7 x^6+31 x^5+50 x^4+32 x^3+64 x^2+34 x+22$
- $y^2=49 x^6+19 x^5+16 x^4+47 x^3+37 x^2+50 x+41$
- $y^2=37 x^6+60 x^5+15 x^4+56 x^3+61 x^2+58 x+51$
- and 120 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 \(\Q(\sqrt{-60 +29 \sqrt{3}})\). |
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.ai_fu | $2$ | (not in LMFDB) |