Question: Let sigma { p _ 1 } S { q _ 1 } and sigma { p _ 2 } S { q

Let \sigma {p_1} S {q_1} and \sigma {p_2} S {q_2}.
Does \sigma {p_1p_2} S {q_1q_2}? Justify your answer briefly.
Does \sigma {p_1p_2} S {q_1q_2}? Justify your answer briefly.
(Recall that (\sigma pq)(\sigma p\sigma q) and (\sigma pq)(\sigma p\sigma q).)

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