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unusual facts about Gelfond's constant


Gelfond's constant

Alan Baker and Gisbert Wüstholz, Logarithmic Forms and Diophantine Geometry, New Mathematical Monographs 9, Cambridge University Press, 2007, ISBN 978-0-521-88268-2


Cahen

Cahen's constant, an infinite series of unit fractions, with alternating signs, derived from Sylvester's sequence

Catalan's constant

Simon Plouffe gives an infinite collection of identities between the trigamma function, π2 and Catalan's constant; these are expressible as paths on a graph.

Curie constant

where N is the number of magnetic atoms (or molecules) per unit volume, g is the Landé g-factor, \mu B (9.27400915e-24 J/T or A·m2) is the Bohr magneton, J is the angular momentum quantum number and k B is Boltzmann's constant.

Gelfond–Schneider theorem

The Gelfond–Schneider theorem answers affirmatively Hilbert's seventh problem.

Micro black hole

On the other hand, the Compton wavelength, \lambda = h/Mc , where h is Planck's constant, represents a limit on the minimum size of the region in which a mass M at rest can be localized.

Vacuum permittivity

where Q is a quantity that represents the amount of electricity present at each of the two points, and ke is Coulomb's constant.

Variable speed of light

Paul Davies and collaborators have suggested that it is in principle possible to disentangle which of the dimensionful constants (the elementary charge, Planck's constant, and the speed of light) of which the fine-structure constant is composed is responsible for the variation.


see also