Invariants
| Base field: | $\F_{61}$ |
| Dimension: | $2$ |
| L-polynomial: | $1 - 4 x + 18 x^{2} - 244 x^{3} + 3721 x^{4}$ |
| Frobenius angles: | $\pm0.208342387637$, $\pm0.680541461352$ |
| Angle rank: | $2$ (numerical) |
| Number field: | \(\Q(\sqrt{-32 -14 \sqrt{3}})\) |
| Galois group: | $D_{4}$ |
| Jacobians: | $378$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3$ |
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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $3492$ | $13926096$ | $51388834212$ | $191862832628736$ | $713406357055793412$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $58$ | $3742$ | $226402$ | $13857070$ | $844671418$ | $51520256782$ | $3142745911426$ | $191707303964254$ | $11694145693148602$ | $713342911414648702$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 378 curves (of which all are hyperelliptic):
- $y^2=6 x^6+46 x^5+54 x^4+24 x^3+58 x^2+47 x+8$
- $y^2=50 x^6+49 x^5+39 x^4+15 x^3+12 x^2+19 x+22$
- $y^2=30 x^6+10 x^5+21 x^4+55 x^3+53 x^2+41 x+14$
- $y^2=15 x^6+5 x^5+57 x^4+10 x^3+3 x^2+47 x+5$
- $y^2=56 x^6+50 x^5+13 x^4+3 x^3+23 x^2+41 x+51$
- $y^2=23 x^6+11 x^5+27 x^4+50 x^3+54 x^2+41 x+35$
- $y^2=12 x^6+60 x^5+45 x^4+51 x^3+8 x^2+16 x+9$
- $y^2=21 x^6+33 x^5+39 x^4+34 x^3+31 x^2+8 x+25$
- $y^2=12 x^6+49 x^5+46 x^4+33 x^3+33 x^2+22 x+32$
- $y^2=44 x^6+36 x^5+5 x^4+47 x^3+46 x^2+5 x+56$
- $y^2=42 x^6+10 x^5+18 x^4+18 x^3+17 x^2+6 x+45$
- $y^2=12 x^6+18 x^5+17 x^4+53 x^3+27 x^2+44 x+50$
- $y^2=54 x^5+44 x^4+57 x^3+12 x^2+11 x+25$
- $y^2=39 x^6+42 x^5+36 x^4+50 x^3+14 x^2+25 x+18$
- $y^2=29 x^6+26 x^5+38 x^4+4 x^3+27 x^2+37 x+52$
- $y^2=29 x^6+49 x^5+59 x^4+9 x^3+48 x^2+26 x+41$
- $y^2=45 x^6+11 x^5+27 x^4+24 x^3+14 x^2+49 x+43$
- $y^2=26 x^6+57 x^5+33 x^4+58 x^3+52 x^2+17$
- $y^2=38 x^6+31 x^5+41 x^4+58 x^3+40 x^2+52 x+3$
- $y^2=51 x^6+58 x^5+60 x^4+44 x^3+55 x^2+11 x+12$
- and 358 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{61}$.
Endomorphism algebra over $\F_{61}$| The endomorphism algebra of this simple isogeny class is \(\Q(\sqrt{-32 -14 \sqrt{3}})\). |
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 |
|---|---|---|
| 2.61.e_s | $2$ | (not in LMFDB) |