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The expression "to unitize a vector" is often use in computational geometry. What does it mean?

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    It is lamentable that different areas of mathematics develop different terms for the same stuff. This just contributes to siloization, which has not been good for the field.2012-07-01

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Yeah, it's a perversion of normalize. If $v\not = 0$, we normalize v as follows $w = {v\over \|v\|}.$ Why this ugly neologism is needed is beyond me.

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    I'm guessing they want to distinguish it from "norm", which could have different definitions, but now they have a name conflict with the unit type, which is sort of worse than conflicting with true and false.2016-03-01