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Mathematics, 03.10.2019 04:00 Nathaliasmiles
In each part, decide if the statement is true. if it is true, prove it. if it is not true, give an explicit counterexample and demonstrate that your counterexample really is one.
(a) for any sets a, b and c, a ∩ b ⊆ c if and only if either a ⊆ c or b ⊆ c.
(b) for any sets a, b and c, a ⊆ b ∩ c if and only if both a ⊆ b and a ⊆ c
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In each part, decide if the statement is true. if it is true, prove it. if it is not true, give an e...
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