mathjs/lib/expression/docs/function/matrix/trace.js

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

module.exports = {
  'name': 'trace',
  'category': 'Matrix',
  'syntax': [
    'trace(A)'
  ],
  'description': 'Calculate the trace of a matrix: the sum of the elements on the main diagonal of a square matrix.',
  'examples': [
    'A = [1, 2, 3; -1, 2, 3; 2, 0, 3]',
    'trace(A)'
  ],
  'seealso': [
    'concat', 'det', 'diag', 'eye', 'inv', 'ones', 'range', 'size', 'squeeze', 'subset', 'transpose', 'zeros'
  ]
};