Več informacij o projektu / More info about the project
Opis / Description
The topology of a network-whether it be a telecommunication, multiprocessor, or local area network-is often modeled by a graph,where vertices represent nodes (such as stations or processors), and edges, either undirected or directed, stand for links orconnections. Several key features must be considered in this model, with the most common being limitations on vertex degrees,diameter and girth. In network terms, the degree of a vertex represents the number of connections a node has, while the diameterrefers to the maximum number of links that must be traversed to transmit a message between any two nodes.This leads to two fundamental questions:What is the largest (smallest) number of nodes that can exist in a network with constrained degree and diameter (girth)?The resolution of these famous problems, known as the Degree/Diameter Problem and Degree/Girth Problem, relies on techniquesfrom Extremal Graph Theory..Within the scope of this project, we will explore five open questions in Extremal Graph Theory, utilizing various techniques,including spectral analysis, combinatorial methods, and the study of asymptotic densities of sets. We are highly optimistic about ourpotential contribution to resolving the missing (57, 2)-Moore graph. Additionally, we aim to provide a proof for the long-standingconjecture proposed by Bermond and Bollobás, which suggests that the gap between extremal graphs and the theoretical largestgraphs is significant. Additionally, we will show that there are no new triangle-free strongly regular graphs. Conversely, we willdemonstrate that the smallest graphs, known as cages, serve as effective expanders-graphs characterized by strong connectivity.The results developed through this project could significantly impact in computer science, particularly in the construction of optimalnetworks.
