, , Show that
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Originally Posted by Spec , , Show that Let be the sum of vector subspaces and . Then and so . However, .
Originally Posted by ThePerfectHacker Let be the sum of vector subspaces and . Then and so . However, . (1) (2) Is that proof enough? I can prove (1), but not (2).
Originally Posted by Spec Is that proof enough? I can prove (1), but not (2). Remember what the the sum of subspaces are. It is the smallest subspace that contains both and . However, already contains , so .
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