Irregular Matrix

An irregular matrix, or ragged matrix, can be described as a matrix that has a different number of elements in each row. Ragged matrices are not used in linear algebra, since standard matrix transformations cannot be performed on them, but they are useful as arrays in computing. Irregular matrices are typically stored using Iliffe vectors.

For example, the following is an irregular matrix:

 \begin{bmatrix} 1 & 31 & 12& -3 \\ 7 & 2 \\ 1 & 2 & 2 \end{bmatrix}

Famous quotes containing the words irregular and/or matrix:

    I am one of those who hold that poetry is never so blithe as in a wanton and irregular subject.
    Michel de Montaigne (1533–1592)

    As all historians know, the past is a great darkness, and filled with echoes. Voices may reach us from it; but what they say to us is imbued with the obscurity of the matrix out of which they come; and try as we may, we cannot always decipher them precisely in the clearer light of our day.
    Margaret Atwood (b. 1939)