Irena M. Jovanović

collaborators

2 papers

math.CO2026

Two conjectures on the cospectrality of complete tripartite graphs are false

Irena M. Jovanović, Jelena Sedlar, Riste Škrekovski

For a graph G of order n with adjacency eigenvalues lambda_1(G) >= ... >= lambda_n(G), the cospectrality of G within the set G of all graphs of order n is the smallest spectral dis…

math.CO2026

Resolutions of two conjectures on the spectral diameter

Irena M. Jovanović, Irena Jovanović, Jelena Sedlar +1

Let $λ_{1} (G) \geq \dots \geq λ_{n} (G)$ be the adjacency spectrum of a graph $G$ on $n$ vertices. The spectral distance $σ (G, H)$ between $n$ -vertex graphs $G$ and $H$ is the Manhattan…