Results 81 to 90 of about 2,715,472 (212)
The Schur Algorithm for Generalized Schur Functions II: Jordan Chains and Transformations of Characteristic Functions [PDF]
Monatshefte f�r Mathematik, 2003 For each non-negative integer \(\kappa\), define the set \(S_\kappa\) to consist of all those complex-valued functions \(s\) that are meromorphic on the unit disc \({\mathbb D}\), have \(\kappa\) poles in the disc, and satisfy \(\limsup_{r\uparrow 1} {| s(re^{it})| }\leq 1\) for almost all \(t\in [0,\,2\pi]\). Equivalently, \(S_\kappa\) consists of all
Alpay, D. +3 more
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The Schur Multiplicative and Harmonic Convexities for Three Classes of Symmetric Functions
Journal of Function Spaces, 2018 We investigate the Schur harmonic convexity for two classes of symmetric functions and the Schur multiplicative convexity for a class of symmetric functions by using a new method and generalizing previous result.
Ming-bao Sun +3 more
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Pieri rules for Schur functions in superspace [PDF]
Discrete Mathematics & Theoretical Computer Science, 2015 The Schur functions in superspace $s_\Lambda$ and $\overline{s}_\Lambda$ are the limits $q=t= 0$ and $q=t=\infty$ respectively of the Macdonald polynomials in superspace.
Miles Eli Jones, Luc Lapointe
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Marginally Strictly Negative Imaginary Systems
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This article revisits a fundamental question in negative imaginary (NI) systems theory: what is the weakest viable notion of strictness that still preserves the classical feedback stability picture? To address this question, we introduce the notion of marginally strictly negative imaginary (MSNI) systems to accommodate simple nonzero imaginary‐
Tianzhe Zhang +3 more
wiley +1 more source
Spectral Submanifolds of Delay Systems: Control in Continuous and Discrete Time
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT This paper presents both continuous‐time and discretization‐based approaches for constructing spectral submanifolds (SSMs) for time delay systems. The continuous‐time approach built upon sun–star calculus, reformulates the governing delay differential equation (DDE) as an operator differential equation (OpDE).
Bence Szaksz +2 more
wiley +1 more source
Journal of Algebra, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ishikawa, Masao, Wakayama, Masato
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Schubert Polynomials and $k$-Schur Functions [PDF]
The Electronic Journal of Combinatorics, 2014 The main purpose of this paper is to show that the multiplication of a Schubert polynomial of finite type $A$ by a Schur function, which we refer to as Schubert vs. Schur problem, can be understood combinatorially from the multiplication in the space of dual $k$-Schur functions.
Carolina Benedetti, Nantel Bergeron
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The role of identification in data‐driven policy iteration: A system theoretic study
International Journal of Robust and Nonlinear Control, EarlyView.Abstract The goal of this article is to study fundamental mechanisms behind so‐called indirect and direct data‐driven control for unknown systems. Specifically, we consider policy iteration applied to the linear quadratic regulator problem. Two iterative procedures, where data collected from the system are repeatedly used to compute new estimates of ...
Bowen Song, Andrea Iannelli
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On The Wreath Product of Schur Functions
, 2007 The characters of the wreath product where first studied by Specht in. Stanley later proposed the question of certain properties of the wreath product of Schur fucntions with respect to the classical theory of symmetric functions.
Ingram, Frank III
core
Izergin-Korepin Analysis on the Projected Wavefunctions of the Generalized Free-Fermion Model
Advances in Mathematical Physics, 2017 We apply the Izergin-Korepin analysis to the study of the projected wavefunctions of the generalized free-fermion model. We introduce a generalization of the L-operator of the six-vertex model by Bump-Brubaker-Friedberg and Bump-McNamara-Nakasuji.
Kohei Motegi
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