In this thesis, we study bispanning graphs, i.e., graphs whose edge set consists of two disjoint spanning trees. In particular, we analyze this graph class with respect to a conjecture due to Mayr and Plaxton. In simple terms, this conjecture states that there exists a minimum number of spanning tree with distinct weights required that the weight function fulfills predefined properties. We are able to prove this claim for certain subclasses of all weighted bispanning graphs. Based on these findings, we formulate a refined conjecture and point out a connection to a special kind of base orderings.
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In this thesis, we study bispanning graphs, i.e., graphs whose edge set consists of two disjoint spanning trees. In particular, we analyze this graph class with respect to a conjecture due to Mayr and Plaxton. In simple terms, this conjecture states that there exists a minimum number of spanning tree with distinct weights required that the weight function fulfills predefined properties. We are able to prove this claim for certain subclasses of all weighted bispanning graphs. Based on these findi...
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