In mathematics, a binary relationR on a set X is reflexive if a is R-related to itself for any a ∈ X. For example, "greater than or equal to" is a reflexive relation but "greater than" is not. All equivalence relations and partial orders are reflexive.
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... 1958 and 1975 (when their business failed) they secretly amassed a remarkable collection of the cars. Now known as the Schlumpf Collection[?], it has been turned into one ...