| 1. | Given a binary relation, one defines its symmetric closure as.
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| 2. | This definition agrees with the definition of union for binary relations.
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| 3. | Binary relations that are both reflexive and Euclidean are equivalence relations.
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| 4. | The binary relation " differences can add up to something big ).
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| 5. | G " is a binary relation on the strings of ?.
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| 6. | The ordinary semantic meaning of ( 9 ) is the binary relation:
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| 7. | This is closely related to the notion of reflexivity for binary relations.
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| 8. | An equivalence relation is a binary relation that is transitive.
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| 9. | Graphs and networks are defined by " binary relations ".
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| 10. | Binary relation are special cases of n-ary relations.
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