A relationship between a Hankel matrix of Markov parameters and the associated matrix polynomial with some applications
We give a Schwarz lemma on complex ellipsoids.
We derive a sharp bound for the modulus of the Schwarzian derivative of concave univalent functions with opening angle at infinity less than or equal to πα, α ∈ [1,2].
In the paper an elementary and simple proof of the Fundamental Theorem of Algebra is given.