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user7534

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157 reputation
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What are the technical reasons that we must define vectors as “arrows” and carefully distinguish them from a point?

linear-algebra definition teaching
aug 22 at 15:11 celtschk 5,696
 
3
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3
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273
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Notation for factorial-type pattern with a skip/step of two instead of one?

sequences-and-series recurrence-relations factorial pattern-recognition
mar 28 '12 at 20:39 robjohn♦ 63.3k
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