def stationary_distribution_sensitivity(T, j):
    r"""Sensitivity matrix of a stationary distribution element.

    Parameters
    ----------
    T : (M, M) ndarray
       Transition matrix (stochastic matrix).
    j : int
        Index of stationary distribution element
        for which sensitivity matrix is computed.


    Returns
    -------
    S : (M, M) ndarray
        Sensitivity matrix for the specified element
        of the stationary distribution.

    """
    T = _types.ensure_ndarray_or_sparse(T, ndim=2, uniform=True, kind='numeric')
    if _issparse(T):
        _showSparseConversionWarning()
        stationary_distribution_sensitivity(T.todense(), j)
    else:
        return dense.sensitivity.stationary_distribution_sensitivity(T, j)