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______ and _______ are the two binary operations defined for lattices.

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______ and _______ are the two binary operations defined for lattices.

(a) Join, meet

(b) Addition, subtraction

(c) Union, intersection

(d) Multiplication, modulo division

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This is a very interesting question from Graphs in section Graphs of Discrete Mathematics

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The correct answer is (a) Join, meet

Easiest explanation: Join and meet are the binary operations reserved for lattices. The join of two elements is their least upper bound. It is denoted by V, not to be confused with disjunction. The meet of two elements is their greatest lower bound. It is denoted by ∧ and not to be confused with a conjunction.

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