A note on Pólya’s theorem

The class of extendedPólya functions Ω={ϕ:ϕ is a continuous real valued real function, ϕ(−t)=ϕ(t)≦ϕ(0) ∈ [0, 1],\(\lim _{t \to \infty } \phi (t) = c ...
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