# brackets

([,]) left and right brackets

## Calling Sequence

    [a11,a12,...;a21,a22,...;...]
                [s1,s2,...]=func(...)

## Arguments

a11,a12,...

  any matrix (real, polynomial, rational, `syslin` list ...) with appropriate dimensions

s1,s2,...

  any possible variable name

## Description

Left and right brackets are used to note vector and matrix concatenation. These symbols are also used to denote a multiple left-hand-side for a function call.

Inside concatenation brackets, blank or comma characters mean "column concatenation", semicolon and carriage-return mean "row concatenation".

Note : to avoid confusions it is safer to use commas instead of blank to separate columns.

Within multiple lhs brackets variable names must be separated by comma.

## Examples

    [6.9,9.64; sqrt(-1) 0]
    [1 +%i  2 -%i  3]
    []
    ['this is';'a string';'vector']
    s=poly(0,'s');[1/s,2/s]
    [tf2ss(1/s),tf2ss(2/s)]

    [u,s]=schur(rand(3,3))

## See Also

- parents
- comma
- semicolon