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\[( \vee \left\{ {a \in I:f(a) = 1} \right\}) \vee ( \vee \left\{ {a \in J:g(a) = 1} \right\}) \le ( \vee \left\{ {a \in I:h(a) = 1} \right\}) \vee ( \vee \left\{ {a \in J:k(a) = 1} \right\})\]

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