Abstract
An Euler tour in a hypergraph (also called a rank-2 universal cycle or 1-overlap cycle in the context of designs) is a closed walk that traverses every edge exactly once. In this paper, we define a covering $k$-hypergraph to be a non-empty $k$-uniform hypergraph in which every $(k-1)$-subset of vertices appear together in at least one edge. We then show that every covering $k$-hypergraph, for $k\geq 3$, admits an Euler tour if and only if it has at least two edges.
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