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Free BC now yields symmetric negative semidefinite discretization.
author Martin Almquist <malmquist@stanford.edu>
date Fri, 15 Dec 2017 16:23:10 -0800
parents f6ada1719420
children
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function u = ifour(u_hat)
    u_hat = ifftshift(u_hat);
    u = ifft(u_hat);
end