Zhang–Zhang Polynomials of Multiple Zigzag Chains Revisited: A Connection with the John–Sachs Theorem
نویسندگان
چکیده
منابع مشابه
Hosoya polynomials of random benzenoid chains
Let $G$ be a molecular graph with vertex set $V(G)$, $d_G(u, v)$ the topological distance between vertices $u$ and $v$ in $G$. The Hosoya polynomial $H(G, x)$ of $G$ is a polynomial $sumlimits_{{u, v}subseteq V(G)}x^{d_G(u, v)}$ in variable $x$. In this paper, we obtain an explicit analytical expression for the expected value of the Hosoya polynomial of a random benzenoid chain with $n$ hexagon...
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There are actually many different zigzag theorems. We will discuss two different zigzag theorems. We will begin with Isbell’s zigzag theorem, which is a an algebraic result involving semigroups and dominions. Then we will also discuss zigzags between two circles, an ergodic result, which is a closure theorem, similar to Poncelet’s porism and Steiner’s porism. We will then mention a general theo...
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چکیده ندارد.
15 صفحه اولThe connection between computability of a nonlinear problem and its linearization: The Hartman-Grobman theorem revisited
As one of the seven open problems in the addendum to their 1989 book Computability in Analysis and Physics [21], Pour-El and Richards asked, “What is the connection between the computability of the original nonlinear operator and the linear operator which results from it?” Yet at present, systematic studies of the issues raised by this question seem to be missing from the literature. In this pa...
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ژورنال
عنوان ژورنال: Molecules
سال: 2021
ISSN: 1420-3049
DOI: 10.3390/molecules26092524