
We show that any connected regular graph with $d+1$ distinct eigenvalues and odd-girth $2d+1$ is distance-regular, and in particular that it is a generalized odd graph.
Odd-girth, spectral excess theorem, distance-regular graphs, Generalized odd graphs, Spectral characterization, Theoretical Computer Science, spectra of graphs, odd-girth, FOS: Mathematics, Discrete Mathematics and Combinatorics, Mathematics - Combinatorics, Distance-regular graphs, Distance in graphs, Graphs and linear algebra (matrices, eigenvalues, etc.), generalized odd graphs, spectral characterization, distance-regular graphs;generalized odd graphs;odd-girth;spectra of graphs;spectral excess theorem;spectral characterization, Spectra of graphs, Computational Theory and Mathematics, distance-regular graphs; generalized odd graphs; odd-girth; spectra of graphs; spectral excess theorem; spectral characterization, Spectral excess theorem, Combinatorics (math.CO), 05E30, 05C50, jel: jel:C0
Odd-girth, spectral excess theorem, distance-regular graphs, Generalized odd graphs, Spectral characterization, Theoretical Computer Science, spectra of graphs, odd-girth, FOS: Mathematics, Discrete Mathematics and Combinatorics, Mathematics - Combinatorics, Distance-regular graphs, Distance in graphs, Graphs and linear algebra (matrices, eigenvalues, etc.), generalized odd graphs, spectral characterization, distance-regular graphs;generalized odd graphs;odd-girth;spectra of graphs;spectral excess theorem;spectral characterization, Spectra of graphs, Computational Theory and Mathematics, distance-regular graphs; generalized odd graphs; odd-girth; spectra of graphs; spectral excess theorem; spectral characterization, Spectral excess theorem, Combinatorics (math.CO), 05E30, 05C50, jel: jel:C0
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