$\K$-Lorentzian and $\K$-CLC Polynomials in Stability Analysis
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2025
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| author | Dey, Papri |
| author_facet | Dey, Papri |
| contents | We study the class of $\K$-Lorentzian polynomials, a generalization of the distinguished class of Lorentzian polynomials. As shown in \cite{GPlorentzian}, the set of $\K$-Lorentzian polynomials is equivalent to the set of $\K$-completely log-concave (aka $\K$-CLC) forms. Throughout this paper, we interchangeably use the terms $\K$-Lorentzian polynomials for the homogeneous setting and $\K$-CLC polynomials for the non-homogeneous setting. By introducing an alternative definition of $\K$-CLC polynomials through univariate restrictions, we establish that any strictly $\K$-CLC polynomial of degree $d \leq 4$ is Hurwitz-stable polynomial over $\K$. Additionally, we characterize the conditions under which a strictly $\K$-CLC of degree $d \geq 5$ is Hurwitz-stable over $\K$. Furthermore, we associate the largest possible proper cone, denoted by $\K(f,v)$, with a given $\K$-Lorentzian polynomial $f$ in the direction $v \in \inter \K$. Finally, we investigate applications of $\K$-CLC polynomials in the stability analysis of evolution variational inequalities (EVI) dynamical systems governed by differential equations and inequality constraints. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_02375 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | $\K$-Lorentzian and $\K$-CLC Polynomials in Stability Analysis Dey, Papri Dynamical Systems Optimization and Control We study the class of $\K$-Lorentzian polynomials, a generalization of the distinguished class of Lorentzian polynomials. As shown in \cite{GPlorentzian}, the set of $\K$-Lorentzian polynomials is equivalent to the set of $\K$-completely log-concave (aka $\K$-CLC) forms. Throughout this paper, we interchangeably use the terms $\K$-Lorentzian polynomials for the homogeneous setting and $\K$-CLC polynomials for the non-homogeneous setting. By introducing an alternative definition of $\K$-CLC polynomials through univariate restrictions, we establish that any strictly $\K$-CLC polynomial of degree $d \leq 4$ is Hurwitz-stable polynomial over $\K$. Additionally, we characterize the conditions under which a strictly $\K$-CLC of degree $d \geq 5$ is Hurwitz-stable over $\K$. Furthermore, we associate the largest possible proper cone, denoted by $\K(f,v)$, with a given $\K$-Lorentzian polynomial $f$ in the direction $v \in \inter \K$. Finally, we investigate applications of $\K$-CLC polynomials in the stability analysis of evolution variational inequalities (EVI) dynamical systems governed by differential equations and inequality constraints. |
| title | $\K$-Lorentzian and $\K$-CLC Polynomials in Stability Analysis |
| topic | Dynamical Systems Optimization and Control |
| url | https://arxiv.org/abs/2501.02375 |