Ramanujan-Eisenstein Series

Let be a discriminant,

(1)

			(2)
			(3)
			(4)

References

Borwein, J. M. and Borwein, P. B. ``Class Number Three Ramanujan Type Series for .'' J. Comput. Appl. Math. 46, 281-290, 1993.

Ramanujan, S. ``Modular Equations and Approximations to .'' Quart. J. Pure Appl. Math. 45, 350-372, 1913-1914.

• Lagrange's Identity
• Lagrange's Interpolating Fundamental Polynomial
• Lagrange's Lemma
• Lagrange Spectrum
• Lagrangian Coefficient
• Lagrangian Derivative
• Laguerre Differential Equation
• Laguerre-Gauss Quadrature
• Laguerre Polynomial
• Laguerre Quadrature
• Laguerre's Method
• Laguerre's Repeated Fraction
• Laisant's Recurrence Formula
• Lakshmi Star
• Lal's Constant
• Laman's Theorem
• Lambda Calculus
• Lambda Function
• Lambda Group
• Lambda Hypergeometric Function
• Lambert Azimuthal Equal-Area Projection
• Lambert Conformal Conic Projection
• Lambert Series
• Lambert's Method
• Lambert's Transcendental Equation