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Mathematics > Combinatorics
Title: Limit points of $A_α$-matrices of graphs
(Submitted on 16 Apr 2024)
Abstract: We study limit points of the spectral radii of $A_{\alpha}$-matrices of graphs. Adapting a method used by J. B. Shearer in 1989, we prove a density property of $A_{\alpha}$-limit points of caterpillars for $\alpha$ close to zero. Precisely, we show that for $\alpha \in [0, 1/2)$ there exists a positive number $\tau_2(\alpha)>2$ such that any value $\lambda> \tau_2(\alpha)$ is an $A_{\alpha}$-limit point. We also determine the existence of other intervals for which all its points are $A_{\alpha}$-limit points.
Submission history
From: Elismar Oliveira R. [view email][v1] Tue, 16 Apr 2024 23:29:23 GMT (488kb)
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