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Null vector

  1. Jan 6, 2013 #1
    I have no idea what this is! Please can someone explain comparing to a 3x3 matrix?
     
  2. jcsd
  3. Jan 6, 2013 #2

    mfb

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    The null vector is the neutral element of addition in a vectorspace: ##\vec{a}+\vec{0}=\vec{a}##.

    In our 3-dimensional space, for example, it can be written as

    $$\begin{pmatrix} 0 \\ 0 \\ 0 \end{pmatrix}$$

    I don't see a reasonable way to compare it to a 3x3-matrix.
     
  4. Jan 6, 2013 #3
    I have a question in my notes saying 'Find a null vector for the following matricies'. They are all 2x2. Can you give an example showing how to do it?
     
  5. Jan 6, 2013 #4

    mfb

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    Post the full problem statement, please.

    I would guess that you should find a (not null) vector, which, multiplied with your matrices, gives the null vector as result.
     
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