Invariants
| Base field: | $\F_{37}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 + 2 x + 37 x^{2} )( 1 + 10 x + 37 x^{2} )$ |
| $1 + 12 x + 94 x^{2} + 444 x^{3} + 1369 x^{4}$ | |
| Frobenius angles: | $\pm0.552568456711$, $\pm0.807138866923$ |
| Angle rank: | $2$ (numerical) |
| Jacobians: | $120$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2$ |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $1920$ | $1935360$ | $2549439360$ | $3512291328000$ | $4808285574729600$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $50$ | $1414$ | $50330$ | $1874062$ | $69339650$ | $2565871126$ | $94931033450$ | $3512478024478$ | $129961777898450$ | $4808584226024614$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 120 curves (of which all are hyperelliptic):
- $y^2=16 x^6+30 x^5+23 x^4+9 x^3+36 x^2+30 x+9$
- $y^2=11 x^6+35 x^5+25 x^4+27 x^3+17 x^2+24 x+30$
- $y^2=23 x^6+36 x^5+28 x^4+20 x^3+34 x^2+4 x+31$
- $y^2=36 x^6+22 x^5+20 x^4+26 x^3+31 x^2+19 x+27$
- $y^2=9 x^6+11 x^5+21 x^4+14 x^3+21 x^2+11 x+9$
- $y^2=21 x^6+4 x^5+3 x^4+11 x^3+12 x^2+27 x+12$
- $y^2=2 x^6+14 x^5+22 x^4+21 x^3+9 x^2+3$
- $y^2=3 x^6+5 x^5+3 x^4+30 x^3+9 x^2+12 x+1$
- $y^2=36 x^6+10 x^5+x^4+27 x^3+7 x^2+7 x+18$
- $y^2=19 x^6+35 x^5+27 x^4+30 x^3+22 x^2+10 x+7$
- $y^2=12 x^6+x^5+29 x^4+3 x^3+33 x^2+9 x+21$
- $y^2=32 x^6+31 x^5+9 x^4+11 x^3+13 x^2+3 x$
- $y^2=31 x^6+36 x^5+20 x^3+36 x+31$
- $y^2=27 x^6+29 x^5+17 x^4+x^3+14 x^2+2 x+26$
- $y^2=x^6+34 x^5+34 x^4+7 x^3+30 x^2+20 x+11$
- $y^2=34 x^6+13 x^5+30 x^4+19 x^3+25 x^2+13 x+33$
- $y^2=21 x^6+11 x^5+23 x^4+11 x^3+15 x^2+x+35$
- $y^2=26 x^6+24 x^5+8 x^4+15 x^3+19 x^2+31 x+22$
- $y^2=12 x^6+21 x^5+17 x^4+27 x^3+23 x^2+4 x+9$
- $y^2=8 x^6+3 x^5+14 x^4+15 x^3+18 x^2+11 x+6$
- and 100 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{37}$.
Endomorphism algebra over $\F_{37}$| The isogeny class factors as 1.37.c $\times$ 1.37.k and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: |
Base change
This is a primitive isogeny class.