Invariants
| Base field: | $\F_{83}$ |
| Dimension: | $2$ |
| L-polynomial: | $( 1 + 6 x + 83 x^{2} )^{2}$ |
| $1 + 12 x + 202 x^{2} + 996 x^{3} + 6889 x^{4}$ | |
| Frobenius angles: | $\pm0.606810309697$, $\pm0.606810309697$ |
| Angle rank: | $1$ (numerical) |
| Jacobians: | $150$ |
| Cyclic group of points: | no |
| Non-cyclic primes: | $2, 3, 5$ |
This isogeny class is not 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
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|
| $A(\F_{q^r})$ | $8100$ | $49280400$ | $325481660100$ | $2251996007040000$ | $15517024442473702500$ |
| $r$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
|---|---|---|---|---|---|---|---|---|---|---|
| $C(\F_{q^r})$ | $96$ | $7150$ | $569232$ | $47452078$ | $3939290256$ | $326939393950$ | $27136036148352$ | $2252292402478558$ | $186940255477329216$ | $15516041171808940750$ |
Jacobians and polarizations
This isogeny class is principally polarizable and contains the Jacobians of 150 curves (of which all are hyperelliptic):
- $y^2=59 x^6+58 x^5+35 x^4+57 x^2+15 x+41$
- $y^2=14 x^6+79 x^5+27 x^4+67 x^3+8 x^2+42 x+33$
- $y^2=12 x^6+27 x^5+60 x^4+60 x^2+27 x+12$
- $y^2=26 x^6+58 x^5+77 x^4+58 x^3+77 x^2+58 x+26$
- $y^2=53 x^6+31 x^5+43 x^4+29 x^3+56 x^2+x+79$
- $y^2=31 x^6+39 x^5+81 x^4+69 x^3+77 x^2+19 x+7$
- $y^2=2 x^6+2 x^5+22 x^4+12 x^3+22 x^2+2 x+2$
- $y^2=56 x^6+36 x^5+59 x^4+79 x^3+59 x^2+36 x+56$
- $y^2=78 x^6+66 x^5+6 x^4+6 x^3+6 x^2+66 x+78$
- $y^2=68 x^6+34 x^5+60 x^4+17 x^3+60 x^2+34 x+68$
- $y^2=26 x^6+72 x^5+8 x^4+69 x^3+72 x^2+22 x+30$
- $y^2=33 x^6+50 x^5+68 x^4+13 x^3+10 x^2+13 x+64$
- $y^2=71 x^6+29 x^5+50 x^4+76 x^3+54 x^2+43 x+21$
- $y^2=28 x^6+33 x^5+68 x^4+38 x^3+5 x^2+40 x$
- $y^2=74 x^6+11 x^5+18 x^4+71 x^3+71 x^2+51 x+58$
- $y^2=63 x^6+71 x^5+41 x^4+28 x^3+41 x^2+71 x+63$
- $y^2=21 x^6+50 x^5+81 x^4+69 x^3+74 x^2+38 x+7$
- $y^2=59 x^6+43 x^5+44 x^4+48 x^3+82 x^2+51 x+35$
- $y^2=79 x^6+60 x^5+32 x^4+59 x^3+18 x^2+54 x+54$
- $y^2=65 x^6+54 x^5+41 x^4+61 x^3+23 x^2+56 x+1$
- and 130 more
Decomposition and endomorphism algebra
All geometric endomorphisms are defined over $\F_{83}$.
Endomorphism algebra over $\F_{83}$| The isogeny class factors as 1.83.g 2 and its endomorphism algebra is $\mathrm{M}_{2}($\(\Q(\sqrt{-74}) \)$)$ |
Base change
This is a primitive isogeny class.