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Linear algebra notation?

  1. Jan 7, 2014 #1
    I know how to solve linear systems but I came across this question where I've never seen the notation before. I searched all over the internet but still couldn't figure it out. The question asked to find all solutions in Z_{2}^{5} of a linear system. I'm guessing that Z^5 means all integers on R^5 since there were 5 variables in the linear system, but I don't know what the subscript 2 means. Anyone care to explain?
  2. jcsd
  3. Jan 7, 2014 #2


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    ##\mathbb{Z}_2## usually means modulo 2. In English it means you are only interested in whether a number is even or odd.
    Last edited: Jan 7, 2014
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