Desargues graph

This article defines a particular undirected graph, i.e., the definition here determines the graph uniquely up to graph isomorphism.
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Definition

The Desargues graph is a particular graph on 20 vertices defined in the following equivalent ways:

1. It is the Levi graph of the Desargues configuration
2. It is the bipartite Kneser graph with parameters 5,2
3. It is the generalized Petersen graph $G(10,3)$.