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In mathematical writing, when b denotes a vector, which sentence is correct when we want to mention that b is a vector?

a) We multiply the b vector by ...

b) We multiply the vector b by ...

  • 2
    Now with the edits, they’re both viable. – Jim Nov 11 '18 at 2:15
  • @Jim, Ok. But which one sounds more familiar to a native? – Bob Nov 11 '18 at 2:16
  • The problem is that i noticed in my essay i used both forms in different places. Should i stick only to one form? – Bob Nov 11 '18 at 2:18
  • Seeing as we would say "the x axis," using "the b vector" may be preferable to keep in line with other math phrases... although we do say "the variable y" ... – Tommy Tran Nov 11 '18 at 7:29
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I would tend to put the description of the vector before the word vector, and the name of the vector after the word vector.

So for example, with v being the vector which measures velocity, I might say:

  • the vector v is the velocity
  • the velocity vector is v
  • the velocity vector v ...

though I would not reject "the v vector is the velocity" as being wrong.

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