The class of elementary functions coincides with the closure with respect to composition of the projections and one of the following function sets:, where is the subtraction function defined above.

Read more about this topic:  ELEMENTARY

Famous quotes containing the words basis for, basis and/or elementary:

    That food has always been, and will continue to be, the basis for one of our greater snobbisms does not explain the fact that the attitude toward the food choice of others is becoming more and more heatedly exclusive until it may well turn into one of those forms of bigotry against which gallant little committees are constantly planning campaigns in the cause of justice and decency.
    Cornelia Otis Skinner (1901–1979)

    The basis of optimism is sheer terror.
    Oscar Wilde (1854–1900)

    If men as individuals surrender to the call of their elementary instincts, avoiding pain and seeking satisfaction only for their own selves, the result for them all taken together must be a state of insecurity, of fear, and of promiscuous misery.
    Albert Einstein (1879–1955)