Let (S, R) be a poset. Show that (S, R-1 ) is also a
Chapter 8, Problem 8.6.12(choose chapter or problem)
Let (S, R) be a poset. Show that (S, R-1 ) is also a poset, where R -I is the inverse of R. The poset (S, R -I ) is called the dual of (S, R).
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