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Understanding which system structure can sustain stable dynamics is a fundamental step in the design and analysis of large scale dynamical systems. Towards this goal, we investigate here the structural stability of systems with a random…

Combinatorics · Mathematics 2020-03-26 Mohamed Ali Belabbas , Artur Kirkoryan

Graph convolutional neural networks (GCNNs) have emerged as powerful tools for analyzing graph-structured data, achieving remarkable success across diverse applications. However, the theoretical understanding of the stability of these…

Machine Learning · Computer Science 2025-10-28 Ning Zhang , Henry Kenlay , Li Zhang , Mihai Cucuringu , Xiaowen Dong

This paper studies the graph-theoretic conditions for stability of positive monotone systems. Using concepts from input-to-state stability and network small-gain theory, we first establish necessary and sufficient conditions for the…

Optimization and Control · Mathematics 2020-05-25 Xiaoming Duan , Saber Jafarpour , Francesco Bullo

In data transmission networks, the availability of data transmission is equivalent to the existence of the fractional factor of the corresponding graph which is generated by the network. Research on the existence of fractional factors under…

Combinatorics · Mathematics 2023-06-14 Jie Wu

Recent work of Lazarovich provides necessary and sufficient conditions on a graph L for there to exist a unique simply-connected (k,L)-complex. The two conditions are symmetry properties of the graph, namely star-transitivity and…

Combinatorics · Mathematics 2013-01-10 Michael Giudici , Cai Heng Li , Akos Seress , Anne Thomas

Given a graph $F$, a hypergraph is called a Berge-$F$ if it can be obtained by expanding each edge of $F$ into a hyperedge containing it. Let $M_{k}$ denote the matching of size $k$. Kang, Ni, and Shan [12] determined the Tur\'an number of…

Combinatorics · Mathematics 2026-01-09 Jia-Bao Yang , Leilei Zhang

The scattering number $s(G)$ of graph $G=(V,E)$ is defined as $s(G)$=max\big\{$c(G-S)-|S|$\big\}, where the maximum is taken over all proper subsets $S\subseteq V(G)$, and $c(G-S)$ denotes the number of components of $G-S$. In 1988, Enomoto…

Combinatorics · Mathematics 2025-09-03 Caili Jia , Yong Lu

This technical report replies to the comments of [2] in detail, and corrects a possible mis-interpretation of [1] in terms of the conventional robust stability concept. After defining the robust stability and quadratic stability concepts,…

Optimization and Control · Mathematics 2014-07-15 Hyo-Sung Ahn , Young-Hun Lim , Kwang-Kyo Oh , YangQuan Chen

We extend the classical stability theorem of Erdos and Simonovits for forbidden graphs of logarithmic order.

Combinatorics · Mathematics 2007-11-22 Vladimir Nikiforov

In this paper we introduce a new property for normed algebras. This property which we call it stability, plays a key role in the studying of the theory of almost multiplier maps. In this note we study some of the basic properties of this…

Functional Analysis · Mathematics 2015-09-29 E. Ansari Piri , S. Nouri

In this paper, we consider the Kirchhoff plate equation with delay terms on the boundary control are added (see system \eqref{p5-2.1} below). we give some instability examples of system \eqref{p5-2.1} for some choices of delays. Finally, we…

Analysis of PDEs · Mathematics 2022-11-21 Mohammad Akil , Haidar Badawi , Mohamed Balegh , Zayd Hajjej

We introduce a modification of the Tur\'an density of ordered graphs and investigate this graph parameter.

Combinatorics · Mathematics 2025-01-14 Christian Reiher , Vojtěch Rödl , Marcelo Sales , Mathias Schacht

A pair of graphs $(\Gamma,\Sigma)$ is called unstable if their direct product $\Gamma\times\Sigma$ admits automorphisms not from $\mathrm{Aut}(\Gamma)\times\mathrm{Aut}(\Sigma)$, and such automorphisms are said to be unexpected. The…

Combinatorics · Mathematics 2026-05-25 Xiaomeng Wang , Yan-Li Qin , Binzhou Xia

Both the Simonovits stability theorem and the Nikiforov spectral stability theorem are powerful tools for solving exact values of Tur\'{a}n numbers in extremal graph theory. Recently, F\"{u}redi [J. Combin. Theory Ser. B 115 (2015)]…

Combinatorics · Mathematics 2022-03-08 Yongtao Li , Yuejian Peng

This work establishes rigorous, novel and widely applicable stability guarantees and transferability bounds for graph convolutional networks -- without reference to any underlying limit object or statistical distribution. Crucially,…

Machine Learning · Computer Science 2023-10-03 Christian Koke

For a nonnegative integer $k$, a graph $G$ is said to be $k$-factor-critical if $G-Q$ admits a perfect matching for any $Q\subseteq V(G)$ with $|Q|=k$. In this article, we prove spectral radius conditions for the existence of…

Combinatorics · Mathematics 2024-01-30 Sizhong Zhou , Zhiren Sun , Yuli Zhang

We present new combinatorial insights into the calculation of (Castelnuovo-Mumford) regularity of graphs.

Combinatorics · Mathematics 2015-03-23 Turker Biyikoglu , Yusuf Civan

The primary objective of this paper is to introduce Hyers-Ulam-type stability results for monotone, subadditive, and convex graphs. We consider their standard definitions in an approximate sense and demonstrate the existence of a…

General Mathematics · Mathematics 2026-02-05 Angshuman R. Goswami , Mahmood K. Shihab

The \textit{node reliability} of a graph $G$ is the probability that at least one node is operational and that the operational nodes can all communicate in the subgraph that they induce, given that the edges are perfectly reliable but each…

Combinatorics · Mathematics 2021-03-26 Jason Brown

The stability number of a graph G, is the cardinality of a stable set of maximum size in G. If the stability number of G remains the same upon the addition of any edge, then G is called $\alpha ^{+}$-stable. G is a K\"{o}nig-Egervary graph…

Combinatorics · Mathematics 2007-05-23 Vadim E. Levit , Eugen Mandrescu
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