Invariants
| Base field: | $\F_{29}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 + 4 x + 48 x^{2} + 116 x^{3} + 841 x^{4}$ |
| Frobenius angles: | $\pm0.448299462879$, $\pm0.678972867232$ |
| Angle rank: | $2$ (numerical) |
| Number field: | 4.0.29415680.1 |
| Galois group: | $D_{4}$ |
| Jacobians: | $48$ |
| 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $1010$ | $777700$ | $590826770$ | $500045546000$ | $420632676470050$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $34$ | $922$ | $24226$ | $706998$ | $20507514$ | $594803242$ | $17250302026$ | $500246334558$ | $14507131242274$ | $420707263502202$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 48 curves (of which all are hyperelliptic):
- $y^2=27 x^6+11 x^5+6 x^4+3 x^3+11 x^2+16 x+25$
- $y^2=13 x^6+11 x^4+2 x^3+23 x^2+20 x+26$
- $y^2=6 x^6+22 x^5+19 x^4+27 x^3+16 x^2+23 x+26$
- $y^2=18 x^6+24 x^5+26 x^4+27 x^3+4 x^2+17 x+23$
- $y^2=5 x^6+10 x^5+17 x^4+13 x^3+2 x^2+25 x+8$
- $y^2=10 x^6+5 x^5+22 x^4+27 x^3+28 x^2+18 x+12$
- $y^2=4 x^6+14 x^5+9 x^4+11 x^3+3 x^2+13 x+28$
- $y^2=17 x^6+x^4+19 x^3+26 x^2+22 x+26$
- $y^2=22 x^6+24 x^5+25 x^4+3 x^3+16 x^2+6 x+14$
- $y^2=25 x^6+x^5+27 x^4+25 x^3+24 x^2+16 x$
- $y^2=2 x^6+7 x^5+25 x^4+21 x^3+10 x^2+4 x+12$
- $y^2=26 x^6+19 x^5+26 x^4+19 x^3+8 x+15$
- $y^2=6 x^6+14 x^5+8 x^4+22 x^3+12 x^2+12 x+1$
- $y^2=19 x^6+3 x^5+6 x^4+21 x^3+26 x^2+28 x+15$
- $y^2=3 x^6+12 x^5+15 x^4+9 x^3+9 x^2+22 x+20$
- $y^2=13 x^6+16 x^5+4 x^4+17 x^3+21 x^2+10 x+18$
- $y^2=12 x^6+11 x^5+19 x^4+10 x^2+19 x+7$
- $y^2=24 x^6+24 x^5+18 x^4+25 x^3+16 x^2+7 x+7$
- $y^2=x^6+17 x^5+12 x^4+24 x^3+6 x^2+14$
- $y^2=19 x^6+10 x^5+12 x^4+12 x^3+11 x^2+17 x+11$
- and 28 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 4.0.29415680.1. |
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.ae_bw | $2$ | (not in LMFDB) |