Quantum graphs—networks composed of vertices connected by edges on which quantum wave dynamics are defined—have emerged as a versatile model for exploring the interplay between geometry, topology, and ...
Let G be a graph, A(G) be the adjacency matrix of G, and λ(G) the least eigenvalue of A(G). Information is given about the following three quantities: $\lambda_R(G ...
The aim of this journal is to publish original contributions to pure and applied mathematics. All papers are refereed. Tsukuba Journal of Mathematics is a continuation of Science Reports of the Tokyo ...
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