Displaying similar documents to “On lattice path counting by major and descents.”

Quadratic Isochronous centers commute

M. Sabatini (1999)

Applicationes Mathematicae

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We prove that every quadratic plane differential system having an isochronous center commutes with a polynomial differential system.

Some debts I owe.

Andrews, George E. (1999)

Séminaire Lotharingien de Combinatoire [electronic only]

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