IEVref: 102-06-01 ID: Language: en Status: Standard Term: matrix Synonym1: Synonym2: Synonym3: Symbol: Definition: array of mn scalars arranged in m rows and n columnsNote 1 to entry: The scalars in the array are called elements of the matrix. Note 2 to entry: The matrix notation is also used with scalar quantities instead of scalars, these quantities being not necessarily of the same kind. Examples are the impedance matrix and the H-matrix (see IEC 60027-2). A matrix notation is sometimes used for operators. This should be justified in each case. Note 3 to entry: A matrix is represented by a letter symbol in italic bold-face type or by the table of elements within parentheses: A or $\left(\begin{array}{ccc}{A}_{11}& \cdots & {A}_{1n}\\ ⋮& \ddots & ⋮\\ {A}_{m1}& \cdots & {A}_{mn}\end{array}\right)$. The notation (Aij) is also used, for example to distinguish the matrix A from a vector A. Square brackets are also used instead of parentheses. For a matrix A, the element at the row i and the column j may be denoted by (A)ij or by Aij if there is no ambiguity. Note 4 to entry: A matrix is complex if its elements are complex numbers or quantities. A complex matrix may be denoted by A, the elements by (A)ij or (A)ij. Publication date: 2008-08 Source: Replaces: Internal notes: 2017-02-20: Editorial revisions in accordance with the information provided in C00019 (IEV 102) - evaluation. JGO 2017-08-24: Corrected the order of and tags. LMO CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: