Let Tₙ denote the set of all labelled spanning trees of Kₙ. A family F Tₙ is t-intersecting if for all A, B F the trees A and B share at least t edges. In this paper, we determine for n>n₀ the size of the largest t-intersecting family F Tₙ for all meaningful values of t (t n-1). This result is a rare instance when a complete t-intersection theorem for a given type of structures is known.
Iarovikova et al. (Wed,) studied this question.