Lakhdar Chiter

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Questions related from Lakhdar Chiter

Is it easy to prove that the only function such that f(f(x)) = x with f(1) = c is f(x) = c/x ?

I have found that this function must satisfy another known functional equation : f(x+y)=f(x)f(y)/f(x)+f(y) which is itself reduced to the well known Cauch functional equation g(x+y)=g(x)+g(y)...

17 May 2014 3,820 3 View

Relation between Haar functions and Walsh functions?

Is there any relationship between Walsh functions and rationalized Haar functions? Can we express a Walsh functions in terms of Haar functions?

01 August 2012 8,946 5 View