Invariants
| Base field: | $\F_{29}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 4 x + 14 x^{2} - 116 x^{3} + 841 x^{4}$ |
| Frobenius angles: | $\pm0.188931413897$, $\pm0.651280863962$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.29952.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $78$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $736$ | $718336$ | $588900832$ | $501490475008$ | $421019017736416$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $26$ | $854$ | $24146$ | $709038$ | $20526346$ | $594821126$ | $17250063682$ | $500247479134$ | $14507134582778$ | $420707196383414$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 78 curves (of which all are hyperelliptic):
- $y^2=x^6+27 x^5+3 x^4+23 x^3+2 x^2+25 x+26$
- $y^2=13 x^6+8 x^5+23 x^4+7 x^3+15 x^2+14 x+9$
- $y^2=8 x^6+18 x^5+18 x^4+3 x^3+7 x^2+5 x+12$
- $y^2=11 x^6+20 x^5+26 x^4+21 x^3+26 x^2+11 x+27$
- $y^2=3 x^6+4 x^5+x^4+21 x^3+13 x^2+3 x+13$
- $y^2=13 x^6+21 x^5+14 x^4+13 x^3+6 x^2+15 x+20$
- $y^2=11 x^6+10 x^5+13 x^4+26 x^3+18 x+1$
- $y^2=9 x^6+20 x^5+14 x^4+17 x^3+11 x^2+25 x+22$
- $y^2=27 x^6+6 x^5+x^4+15 x^3+4 x+24$
- $y^2=20 x^6+16 x^5+9 x^4+28 x^3+12 x^2+12 x+27$
- $y^2=20 x^6+18 x^5+25 x^4+13 x^3+13 x^2+14 x+28$
- $y^2=22 x^6+11 x^5+19 x^4+22 x^3+13 x^2+21 x+4$
- $y^2=22 x^6+2 x^5+25 x^3+24 x^2+13 x+8$
- $y^2=26 x^6+3 x^5+23 x^4+11 x^3+13 x^2+x+23$
- $y^2=16 x^6+15 x^4+9 x^3+10 x^2+8 x+2$
- $y^2=22 x^6+9 x^5+7 x^4+10 x^3+6 x^2+14 x+13$
- $y^2=23 x^5+28 x^4+16 x^3+24 x^2+5 x+11$
- $y^2=4 x^6+8 x^5+2 x^4+4 x^3+26 x^2+15 x+9$
- $y^2=3 x^6+26 x^5+2 x^4+12 x^3+25 x^2+11 x+27$
- $y^2=27 x^6+21 x^5+14 x^4+19 x^3+6 x^2+2 x+21$
- and 58 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{29}$.
Endomorphism algebra over $\F_{29}$| The endomorphism algebra of this simple isogeny class is 4.0.29952.1. |
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 |
|---|---|---|
| 2.29.e_o | $2$ | (not in LMFDB) |