Displaying similar documents to “Spectral theory from the second-order q -difference operator.”

Transference for hypergroups.

Giacomo Gigante (2001)

Collectanea Mathematica

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A transference theorem for convolution operators is proved for certain families of one-dimensional hypergroups.

Integrable systems in the plane with center type linear part

Javier Chavarriga (1994)

Applicationes Mathematicae

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We study integrability of two-dimensional autonomous systems in the plane with center type linear part. For quadratic and homogeneous cubic systems we give a simple characterization for integrable cases, and we find explicitly all first integrals for these cases. Finally, two large integrable system classes are determined in the most general nonhomogeneous cases.