caa a22 4500 465754953 CHVBK 20180323111844.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF01166358 doi (NATIONALLICENCE)springer-10.1007/BF01166358 Isospectral points and edges in graph theory [Elektronische Daten] [John Lowe, Matthew Davis] The relationship of isospectral points to symmetrically equivalent points in a graph is described. Many isospectral points are related to symmetrically equivalent verticesvia an equivalence-preserving perturbation. A graph having isospectraledges is examined for clues to assist in finding other such graphs. Two families are found in this manner. Application of equivalence-preserving perturbations to edges that are initially symmetrically equivalent leads to an unlimited number of families of graphs, many with more than one pair of isospectral edges. J.C. Baltzer AG, Scientific Publishing Company, 1990 Lowe John Department of Chemistry, 152 Davey Laboratory, Pennsylvania State University, University Park, PA 16802, USA aut Davis Matthew Department of Chemistry, 152 Davey Laboratory, Pennsylvania State University, University Park, PA 16802, USA aut Journal of Mathematical Chemistry Kluwer Academic Publishers 5/3(1990-09-01), 275-285 0259-9791 5:3<275 1990 5 10910 https://doi.org/10.1007/BF01166358 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01166358 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lowe John Department of Chemistry, 152 Davey Laboratory, Pennsylvania State University, University Park, PA 16802, USA aut NATIONALLICENCE 700 1- Davis Matthew Department of Chemistry, 152 Davey Laboratory, Pennsylvania State University, University Park, PA 16802, USA aut NATIONALLICENCE 773 0- Journal of Mathematical Chemistry Kluwer Academic Publishers 5/3(1990-09-01), 275-285 0259-9791 5:3<275 1990 5 10910 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer