HIGHLIGHTS
- who: Aida Abiad from the Department of and Computer Science, Eindhoven University of Technology, Eindhoven, The Netherlands have published the article: The M-matrix group inverse problem for distance-biregular graphs, in the Journal: (JOURNAL)
- what: The authors show that the two equilibrium arrays characterizing distance-biregular graphs can be expressed in terms of the mentioned equilibrium measures. As a consequence of the minimum principle the authors provide a characterization of when the group inverse of the combinatorial of a distance-biregular graph is an
SUMMARY
One problem with the theory . . .
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