Omran Kouba

3 Questions 41 Answers 0 Followers

Questions related from Omran Kouba

Is the set of reals that guarantee all the zeros of this polynomial are in the unit Disk an interval?

In the attached image I explained my question clearly.

25 September 2019 9,301 7 View

Is it true that Sum[|cos(k)|:0<= k<=n]>2 n/π for all positive integers n?

Indeed, using the equidistribution of the sequence (n mod 2π)n we can show easily that (Sum[|cos(k)|:0

17 October 2018 9,837 4 View

How do I find the L^1 distance to completely monotonous functions?

How do I find "the" nearest completely monotonous function to $f(t)=1/(1+t^2)$ on $[0,+infinity)$ in the "L^1-norm" ? Note that $f(t)$ is not itself a completely monotonous function.

25 March 2014 8,097 7 View