Recent content by Luisito89

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    Graduate Span(S1 ∩ S2) ⊆ span(S1) ∩ span(S2)

    Hi! I wonder if you guys help me prove this: span(S1 ∩ S2) ⊆ span(S1) ∩ span(S2) I have seen span(S1 U S2) = span(S1) + span(S2), so I just want to prove this one, any suggestion?