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sherlock19
sherlock19
03.12.2019 • 
Mathematics

Determine whether a relation r on the set of all people is reflexive, symmetric, antisymmetric, and/or transitive, for the following 4 different r's : a) a,b∈r iff a is taller than b b) a,b∈r iff a and b were born on the same day c) a,b∈r iff a has the same first name as b d) a,b∈r iff a and b have a common grandparent

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