Listar por tema "Hyperbolic umbilic catastrophe integral"
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An asymptotic expansion of the hyberbolic umbilic catastrophe integral
We obtain an asymptotic expansion of the hyperbolic umbilic catastrophe integral Ψ(H) (x,y,z) := ∫∞−∞∫∞−∞exp(i(s3+t3+zst +yt+xs))ds dt for large values of |x| and bounded values of |y| and |z|. The expansion is given ...