Invariants
| Base field: | $\F_{59}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 20 x^{2} + 3481 x^{4}$ |
| Frobenius angles: | $\pm0.277106268321$, $\pm0.722893731679$ |
| Angle rank: | $1$ (numerical) |
| Number field: | \(\Q(\sqrt{2}, \sqrt{-69})\) |
| Galois group: | $C_2^2$ |
| Jacobians: | $196$ |
| Isomorphism classes: | 288 |
| Cyclic group of points: | yes |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3502$ | $12264004$ | $42180332782$ | $146989533157776$ | $511116754376337502$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $60$ | $3522$ | $205380$ | $12130486$ | $714924300$ | $42180131922$ | $2488651484820$ | $146830399954078$ | $8662995818654940$ | $511116755452033602$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 196 curves (of which all are hyperelliptic):
- $y^2=40 x^5+55 x^4+28 x^2+39 x+27$
- $y^2=21 x^5+51 x^4+56 x^2+19 x+54$
- $y^2=34 x^6+7 x^5+30 x^4+x^2+31 x+36$
- $y^2=18 x^6+42 x^5+41 x^4+16 x^3+31 x^2+29 x+29$
- $y^2=36 x^6+25 x^5+23 x^4+32 x^3+3 x^2+58 x+58$
- $y^2=41 x^6+42 x^5+20 x^4+32 x^3+9 x^2+2 x+44$
- $y^2=23 x^6+25 x^5+40 x^4+5 x^3+18 x^2+4 x+29$
- $y^2=21 x^6+26 x^5+50 x^4+23 x^3+54 x^2+58 x+26$
- $y^2=42 x^6+52 x^5+41 x^4+46 x^3+49 x^2+57 x+52$
- $y^2=20 x^6+11 x^5+48 x^4+45 x^3+24 x^2+12 x+17$
- $y^2=40 x^6+22 x^5+37 x^4+31 x^3+48 x^2+24 x+34$
- $y^2=8 x^6+28 x^5+26 x^4+14 x^3+28 x^2+3 x+17$
- $y^2=16 x^6+56 x^5+52 x^4+28 x^3+56 x^2+6 x+34$
- $y^2=54 x^6+41 x^5+11 x^4+50 x^3+6 x^2+2 x+55$
- $y^2=49 x^6+23 x^5+22 x^4+41 x^3+12 x^2+4 x+51$
- $y^2=52 x^6+45 x^5+34 x^4+23 x^3+20 x^2+16 x+2$
- $y^2=45 x^6+31 x^5+9 x^4+46 x^3+40 x^2+32 x+4$
- $y^2=29 x^6+54 x^5+18 x^4+42 x^3+50 x^2+3 x+26$
- $y^2=58 x^6+49 x^5+36 x^4+25 x^3+41 x^2+6 x+52$
- $y^2=54 x^6+x^5+34 x^4+35 x^3+29 x^2+30 x+11$
- and 176 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{59^{2}}$.
Endomorphism algebra over $\F_{59}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{2}, \sqrt{-69})\). |
| The base change of $A$ to $\F_{59^{2}}$ is 1.3481.u 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-69}) \)$)$ |
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 |
|---|---|---|
| 2.59.a_au | $4$ | (not in LMFDB) |
| 2.59.ao_du | $8$ | (not in LMFDB) |
| 2.59.o_du | $8$ | (not in LMFDB) |