6,296 research outputs found
Orthogonal polynomials on the unit circle: New results
We announce numerous new results in the theory of orthogonal polynomials on
the unit circle
Fine structure of the zeros of orthogonal polynomials, I. A tale of two pictures
Mhaskar-Saff found a kind of universal behavior for the bulk structure of the zeros of orthogonal polynomials for large n. Motivated by two plots, we look at the finer structure for the case of the Verblunsky coefficients and for what we call the BLS condition: αn = Cb^n + O ((bΔ)^n). In the former case, we describe the results of Stoiciu. In the latter case, we prove asymptotically equal spacing for the bulk of zeros
Fine Structure of the Zeros of Orthogonal Polynomials: A Review
We review recent work on zeros of orthogonal polynomials
Tosio Kato's Work on Non-Relativistic Quantum Mechanics: An Outline
Based at a talk given at the Kato Centennial Symposium in Sept. 2017, this
article discusses the scientific life and some of the scientific work of T.
Kato.Comment: 15 pages. Based on a much longer review article (of 200 plus pages)
still in prpearatio
Schrödinger semigroups on the scale of Sobolev spaces
We consider the action of semigroups e(-tH), with H = -Δ + V on L(2)(R(v)), on the scale of Sobolev spaces H(α). We show that while e(-tH) maps L(2)=H(0) to H(2) under great generality, there exist bounded V so that, for all β > 0, e(-tH)[H(β)] is not contained in any H(α) with a > 2
Analogs of the M-Function in the Theory of Orthogonal Polynomials on the Unit Circle
We show that the multitude of applications of the Weyl-Titchmarsh m-function
leads to a multitude of different functions in the theory of orthogonal
polynomials on the unit circle that serve as analogs of the m-function
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