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"An one-column matrix" or "a one-column matrix" ?

That's from a phrase like :


  • Pressed Enter too soon... just wanted to get a new line. Sorry, but it's my first post on this forum.
    My question comes from a phrase like : "...representation of a vector by a / an ? one-column matrix".
    Thank u, best regards, Liv.

  • What matters, @Live_Liv, is not the LETTER at the start of the word, but the SOUND.

    The word spelled one is pronounced WUN. So the first sound is W, which is a CONSONANT.

    So it's a one, not an one.

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