MATRIXDEF: Difference between revisions

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Defines two matrices <code>M</code> and <code>N</code> and assigns a value to <code>N</code>. In expression evaluation, iMath will treat the matrices as non-commutative, that is, <code>M N &ne; N M</code>.
Defines two matrices <code>M</code> and <code>N</code> and assigns a value to <code>N</code>. In expression evaluation, iMath will treat the matrices as non-commutative, that is, <code>M N &ne; N M</code>.
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[[VECTORDEF]]
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[[Category:Definition]]
[[Category:Definition]]

Revision as of 19:24, 27 June 2017

Syntax

MATRIXDEF symbol

@label@ { options } MATRIXDEF [*] symbol = expression

Implemented in iMath since version 2.2.0 or earlier.

Explanation

Defines the symbol to be a (two-dimensional) matrix. This is important because matrices are non-commutative when evaluating an expression.

The second form is a shortcut for the combination of MATRIXDEF and EQDEF. It defines the symbol and creates an equation defining its value.

Example

MATRIXDEF M

MATRIXDEF N = MATRIX{ a # b # c ## d # e # f ## g# h# i }

Defines two matrices M and N and assigns a value to N. In expression evaluation, iMath will treat the matrices as non-commutative, that is, M N ≠ N M.

See also

VECTORDEF