Spectral Theory of Ordinary Differential Equations/weyl-titchmarsh-kodaira Theory

Famous quotes containing the words spectral, theory, ordinary and/or differential:

    How does one kill fear, I wonder? How do you shoot a spectre through the heart, slash off its spectral head, take it by its spectral throat?
    Joseph Conrad (1857–1924)

    A theory if you hold it hard enough
    And long enough gets rated as a creed....
    Robert Frost (1874–1963)

    It is very considerably smaller than Australia and British Somaliland put together. As things stand at present there is nothing much the Texans can do about this, and ... they are inclined to shy away from the subject in ordinary conversation, muttering defensively about the size of oranges.
    Alex Atkinson, British humor writer. repr. In Present Laughter, ed. Alan Coren (1982)

    But how is one to make a scientist understand that there is something unalterably deranged about differential calculus, quantum theory, or the obscene and so inanely liturgical ordeals of the precession of the equinoxes.
    Antonin Artaud (1896–1948)