Ramanujan Constant
The Irrational constant
which is very close to an Integer. Numbers such as the Ramanujan constant can be found using thetheory of Ramanujan
(1913-14), including the one above, and can be generated using some amazing properties of the j-Function.M. Gardner (Apr. 1975) played an April Fool's joke on the readers of Scientific American by claiming that this numberwas exactly an Integer. He admitted the hoax a few months later (Gardner, July 1975).
See also Almost Integer, Class Number, j-Function
References
Ball, W. W. R. and Coxeter, H. S. M. Mathematical Recreations and Essays, 13th ed. New York: Dover, p. 387, 1987. Castellanos, D. ``The Ubiquitous Pi. Part I.'' Math. Mag. 61, 67-98, 1988. Gardner, M. ``Mathematical Games: Six Sensational Discoveries that Somehow or Another have Escaped Public Attention.'' Sci. Amer. 232, 127-131, Apr. 1975. Gardner, M. ``Mathematical Games: On Tessellating the Plane with Convex Polygons.'' Sci. Amer. 232, 112-117, Jul. 1975. Good, I. J. ``What is the Most Amazing Approximate Integer in the Universe?'' Pi Mu Epsilon J. 5, 314-315, 1972. Plouffe, S. `` Ramanujan, S. ``Modular Equations and Approximations to Wolfram, S. The Mathematica Book, 3rd ed. New York: Cambridge University Press, p. 52, 1996.
, the Ramanujan Number.''http://www.lacim.uqam.ca/piDATA/ramanujan.txt.
.'' Quart. J. Pure Appl. Math. 45, 350-372, 1913-1914.
- Orthographic Projection
- Orthologic
- Orthonormal Basis
- Orthonormal Functions
- Orthonormal Vectors
- Orthopole
- Orthoptic Curve
- Orthotomic
- Orthotope
- Osborne's Rule
- Oscillation
- Oscillation Land
- Osculating Circle
- Osculating Curves
- Osculating Interpolation
- Osculating Plane
- Osculating Sphere
- Osedelec Theorem
- Ostrowski's Inequality
- Ostrowski's Theorem
- Otter's Tree Enumeration Constants
- Outdegree
- Outer Automorphism Group
- Outer Product
- Oval