It is well known that any spanning tree of a graph can be obtained from any other by a sequence of single edge exchanges in a way that preserves, at each step, the property of being a spanning tree. We consider a variation of this problem concerning pairs of edge‐disjoint spanning trees. In particular, it is shown that any pair of edge‐disjoint spanning trees can be obtained from any other by a sequence of single edge exchanges in a way that preserves, at each step, the property of being edge‐disjoint spanning trees.
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Farber et al. (1985) studied this question.