no_pi

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no_pi#

Initialize self. See help(type(self)) for accurate signature.

surface_dynamics.topological_recursion.no_pi.zeta_no_pi()#

zeta(2m+2) = (-1)^m B_{2m+2} (2pi)^(2m+2) / (2 (2m+2)!)

EXAMPLES:

sage: from surface_dynamics.topological_recursion.no_pi import zeta_no_pi
sage: zeta_no_pi(2)
1/6
sage: zeta_no_pi(4)
1/90
sage: zeta_no_pi(6)
1/945

sage: zeta(2)
1/6*pi^2
sage: zeta(4)
1/90*pi^4
sage: zeta(6)
1/945*pi^6
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