Definition of off-diagonal in English:

off-diagonal

adjective

Mathematics
  • Denoting an element of a square matrix that is not on the diagonal running from the upper left to the lower right.

    • ‘If the off-diagonal elements are nonzero, then the fixation probability is increased, because the invading sequence gets support from its mutational neighbors.’
    • ‘The direct elasticities are given as the bold diagonal numbers and the off-diagonal estimates are cross-elasticities.’
    • ‘In this symmetric case, the stability matrix A has all diagonal elements equal and all off-diagonal elements equal.’
    • ‘In contrast, the off-diagonal elements, representing autocorrelation across equations, are generally negative, although small in value.’
    • ‘The main diagonal of the matrix contains the correct responses for each stimulus, whereas the incorrect/confused responses correspond to the off-diagonal elements.’