Genus 2 isogeny class 262144.c

• Label: 262144.c
• Conductor: $262144$
• Sato-Tate group: $J(E_4)$
• \(\End(J_{\overline{\Q}}) \otimes \R\): \(\mathrm{M}_2(\R)\)
• \(\End(J_{\overline{\Q}}) \otimes \Q\): \(\mathrm{M}_2(\Q)\)
• \(\End(J) \otimes \Q\): \(\Q\)
• \(\overline{\Q}\)-simple: no
• \(\mathrm{GL}_2\)-type: no

Genus 2 curves in isogeny class 262144.c

Label	Equation
262144.c.524288.1	\(y^2 = x^5 - 2x^3 + 2x\)

L-function data

Analytic rank:

\(1\)

Mordell-Weil rank:

\(1\)

Bad L-factors:

Prime	L-Factor
\(2\)	\( 1\)

Good L-factors:

Prime	L-Factor
\(3\)	\( 1 + 4 T^{2} + 9 T^{4}\)
\(5\)	\( ( 1 - 2 T + 5 T^{2} )( 1 + 4 T + 5 T^{2} )\)
\(7\)	\( ( 1 - 2 T + 7 T^{2} )( 1 + 2 T + 7 T^{2} )\)
\(11\)	\( 1 + 20 T^{2} + 121 T^{4}\)
\(13\)	\( ( 1 - 6 T + 13 T^{2} )( 1 + 4 T + 13 T^{2} )\)
\(17\)	\( ( 1 - 8 T + 17 T^{2} )( 1 + 8 T + 17 T^{2} )\)
\(19\)	\( 1 + 20 T^{2} + 361 T^{4}\)
\(23\)	\( ( 1 - 6 T + 23 T^{2} )( 1 + 6 T + 23 T^{2} )\)
\(29\)	\( ( 1 - 10 T + 29 T^{2} )( 1 + 4 T + 29 T^{2} )\)
$\cdots$	$\cdots$

See L-function page for more information

Sato-Tate group

\(\mathrm{ST} =\) $J(E_4)$, \(\quad \mathrm{ST}^0 = \mathrm{SU}(2)\)

Decomposition of the Jacobian

Splits over the number field \(\Q (b) \simeq \) 4.2.2048.1 with defining polynomial:
  \(x^{4} - 2\)

Decomposes up to isogeny as the product of the non-isogenous elliptic curve isogeny classes:
  \(y^2 = x^3 - g_4 / 48 x - g_6 / 864\) with
  \(g_4 = 160 b^{2} + 96\)
  \(g_6 = 1792 b^{3} + 2304 b\)
   Conductor norm: 16384
  \(y^2 = x^3 - g_4 / 48 x - g_6 / 864\) with
  \(g_4 = 160 b^{2} + 96\)
  \(g_6 = -1792 b^{3} - 2304 b\)
   Conductor norm: 16384

Endomorphisms of the Jacobian

Not of \(\GL_2\)-type over \(\Q\)

Endomorphism algebra over \(\Q\):

\(\End (J_{}) \otimes \Q \)	\(\simeq\)	\(\Q\)
\(\End (J_{}) \otimes \R\)	\(\simeq\)	\(\R\)

Smallest field over which all endomorphisms are defined:
Galois number field \(K = \Q (a) \simeq \) 8.0.16777216.2 with defining polynomial \(x^{8} - 4 x^{6} + 8 x^{4} - 4 x^{2} + 1\)

Endomorphism algebra over \(\overline{\Q}\):

\(\End (J_{\overline{\Q}}) \otimes \Q \)	\(\simeq\)	\(\mathrm{M}_2(\)\(\Q\)\()\)
\(\End (J_{\overline{\Q}}) \otimes \R\)	\(\simeq\)	\(\mathrm{M}_2 (\R)\)

More complete information on endomorphism algebras and rings can be found on the pages of the individual curves in the isogeny class.