Mercoledì 16 Aprile 2025 alle ore 12:00, nel quadro del ciclo di seminari Al@Bicocca, Stefano Spessato (Università Niccolò Cusano) terrà il seguente intervento
Titolo: On the complement of a signed graph
Abstract: A G-gain graph is a triple (Γ, ψ, G) where Γ is a graph, G is a group, and ψ is a function from the set of oriented edges of Γ to G satisfying ψ(x, y)−1 = ψ(y, x). When G = Z2, such graphs are called signed graphs. In recent years, considerable attention has been devoted to extending the rich array of classical graph constructions to the realm of G-gain graphs. During this talk, we will focus on the construction of the complement of a signed graph and it will be shown that the definition introduced in a recent work by Cavaleri, Donno, and the speaker satisfies all the expected properties. Finally, some considerations will be made regarding a possible further extension to G-gain graphs where G is an arbitrary group.
Informazioni per partecipare
Il seminario si terrà in Aula 2109 (2° Piano) - Edificio U5, Università degli Studi di Milano-Bicocca e sarà possibile partecipare anche online da questo link
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