Mathematics, 22.04.2020 03:43, kenisonpaigebosma

For the set of cities on a map, consider the relation xry if and only if city x is connected by a road to city y. A city is considered to be connected to itself, and two cities are connected even though there are cities on the road between them. Is this an equivalence relation or a partial ordering? Explain

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For the set of cities on a map, consider the relation xry if and only if city x is connected by a ro...