Some applications of functional equations in astronomy Publications, to be read The functional equation of the mean sun written as a group action Group actions and the functional equation of the mean sun

Group actions and the functional equation of the mean sun

COMPTES RENDUS MATHEMATIQUES 24 (1), 21 - 25, 2002.

Abstract: A generalization of the functional equation g(s+t)x(u)=g(s)x(t+u) (for all s,t,u in R ) of the mean sun is studied, where a group G acts on a set X, (R,+) is a not necessarily commutative group and both x: R→ X and g: R→ G are unknown functions, which will be determined by the equation.


harald.fripertinger "at" uni-graz.at, October 12, 2017

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