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If a relation matrix has all off-diagonal entries (1), but one main diagonal entry is (0), what is the relation like?

Answer and explanation

Correct answer: Not reflexive

Step 1: Reflexivity requires every main diagonal entry to be (1). Step 2: If one diagonal entry is (0), one ((a,a)) is missing. Step 3: Having many off-diagonal pairs does not make a relation reflexive.

Related tags

RelationsFunctionsReflexive RelationMatrix DiagonalHardReflexive RelationRelations And FunctionsMathematics

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