Recent content by strman

  1. S

    Proof involving vector subspaces

    Let W1 and W2 be subspaces of a vector space V. Prove that W1\bigcupW2 is a subspace of V if and only if W1\subseteqW2 or W2\subseteqW1Well so far, I have proven half of the statement (starting with the latter conditions). Right now I'm struggling to show that the final conditions follow from...
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