Invariants
| Base field: | $\F_{43}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 58 x^{2} + 1849 x^{4}$ |
| Frobenius angles: | $\pm0.367802827160$, $\pm0.632197172840$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(i, \sqrt{7})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $253$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3$ |
This isogeny class is simple but not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $1908$ | $3640464$ | $6321236436$ | $11690490986496$ | $21611482157282868$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $44$ | $1966$ | $79508$ | $3419470$ | $147008444$ | $6321109822$ | $271818611108$ | $11688213729694$ | $502592611936844$ | $21611482001281486$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 253 curves (of which all are hyperelliptic):
- $y^2=10 x^6+5 x^5+28 x^4+20 x^3+3 x^2+31 x+39$
- $y^2=30 x^6+15 x^5+41 x^4+17 x^3+9 x^2+7 x+31$
- $y^2=11 x^6+34 x^5+42 x^4+16 x^3+33 x^2+31 x+29$
- $y^2=24 x^6+34 x^5+11 x^4+17 x^3+8 x^2+36 x+39$
- $y^2=29 x^6+16 x^5+33 x^4+8 x^3+24 x^2+22 x+31$
- $y^2=36 x^6+17 x^5+8 x^4+28 x^3+38 x^2+42 x+12$
- $y^2=17 x^6+25 x^5+38 x^4+10 x^3+17 x^2+7 x+2$
- $y^2=8 x^6+32 x^5+28 x^4+30 x^3+8 x^2+21 x+6$
- $y^2=37 x^6+15 x^5+2 x^4+30 x^3+25 x^2+11 x+31$
- $y^2=16 x^5+41 x^4+24 x^3+6 x^2+13 x+30$
- $y^2=5 x^5+37 x^4+29 x^3+18 x^2+39 x+4$
- $y^2=2 x^6+34 x^5+23 x^4+39 x^3+17 x^2+13 x+3$
- $y^2=6 x^6+16 x^5+26 x^4+31 x^3+8 x^2+39 x+9$
- $y^2=2 x^6+26 x^5+29 x^4+3 x^3+7 x^2+12 x+34$
- $y^2=6 x^6+35 x^5+x^4+9 x^3+21 x^2+36 x+16$
- $y^2=16 x^6+28 x^5+2 x^4+34 x^3+36 x^2+18 x+18$
- $y^2=27 x^6+42 x^5+36 x^4+40 x^3+9 x^2+18 x+32$
- $y^2=38 x^6+40 x^5+22 x^4+34 x^3+27 x^2+11 x+10$
- $y^2=33 x^6+2 x^5+37 x^4+14 x^3+2 x^2+32 x+2$
- $y^2=30 x^6+41 x^5+x^4+39 x^3+12 x^2+20 x+30$
- and 233 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{43^{2}}$.
Endomorphism algebra over $\F_{43}$| The endomorphism algebra of this simple isogeny class is \(\Q(i, \sqrt{7})\). |
| The base change of $A$ to $\F_{43^{2}}$ is 1.1849.cg 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-7}) \)$)$ |
Base change
This is a primitive isogeny class.