Invariants
| Base field: | $\F_{37}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 4 x + 28 x^{2} - 148 x^{3} + 1369 x^{4}$ |
| Frobenius angles: | $\pm0.232145237893$, $\pm0.636862186567$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.10496.2 |
| Galois group: | $D_{4}$ |
| Jacobians: | $126$ |
| Isomorphism classes: | 306 |
| Cyclic group of points: | yes |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $1246$ | $1931300$ | $2557002574$ | $3518249210000$ | $4810562126601406$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $34$ | $1410$ | $50482$ | $1877238$ | $69372474$ | $2565674130$ | $94931560282$ | $3512479659678$ | $129961702714114$ | $4808584243010050$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 126 curves (of which all are hyperelliptic):
- $y^2=x^6+4 x^5+7 x^4+14 x^3+22 x^2+10 x+5$
- $y^2=2 x^6+30 x^5+8 x^4+5 x^3+22 x^2+24 x+30$
- $y^2=10 x^6+17 x^5+24 x^4+24 x^3+11 x^2+23 x+36$
- $y^2=27 x^6+33 x^5+14 x^4+17 x^3+28 x^2+15 x+20$
- $y^2=33 x^6+16 x^5+14 x^4+4 x^3+2 x^2+26$
- $y^2=x^6+22 x^5+22 x^4+6 x^3+12 x^2+30 x+2$
- $y^2=36 x^6+18 x^5+9 x^4+33 x^3+29 x^2+17 x+16$
- $y^2=5 x^5+6 x^4+4 x^3+32 x^2+28 x+20$
- $y^2=x^6+14 x^5+21 x^4+35 x^3+35 x^2+32$
- $y^2=31 x^6+33 x^5+24 x^4+5 x^3+22 x^2+35 x+9$
- $y^2=23 x^6+30 x^5+33 x^4+27 x^3+20 x^2+2 x+6$
- $y^2=35 x^6+30 x^5+33 x^4+29 x^3+28 x^2+13 x+29$
- $y^2=21 x^5+29 x^4+16 x^3+18 x^2+13 x+24$
- $y^2=32 x^6+31 x^5+15 x^4+24 x^3+32 x^2+36 x+2$
- $y^2=24 x^6+31 x^5+2 x^4+36 x^3+33 x^2+17 x+13$
- $y^2=16 x^6+25 x^5+32 x^4+15 x^3+24 x^2+4 x+32$
- $y^2=9 x^6+11 x^5+24 x^4+5 x^3+36 x^2+26 x+29$
- $y^2=13 x^6+29 x^5+3 x^4+3 x^3+32 x^2+36 x$
- $y^2=25 x^6+6 x^5+17 x^4+33 x^3+17 x^2+25 x+35$
- $y^2=25 x^6+12 x^5+27 x^4+2 x^3+19 x^2+32 x+35$
- and 106 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{37}$.
Endomorphism algebra over $\F_{37}$| The endomorphism algebra of this simple isogeny class is 4.0.10496.2. |
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 |
|---|---|---|
| 2.37.e_bc | $2$ | (not in LMFDB) |