On solutions of differential equations which satisfy certain algebraic relations

Steven Sperber

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


In the following, we provide another proof (Theorem 3.1 below) of recent results of Harris-Sibuya, using some elementary commutative algebra. Our purpose is to give a uniform treatment for their results which also permits some generalization. We note that the study of differential equations under the hypothesis that the solutions satisfy an algebraic relation is not new. Fano, among others, made a systematic study of this situation in the last century. Also Lamé equations in which two solutions have a rational function as their product have proved to be a good source of examples for unusual arithmetic behavior. But in the case of Harris-Sibuya, as well as the present paper, the solutions need not be solutions of the same linear equation. In the treatment below the differential equation only enters in dilineating a type of recursion.

Original languageEnglish (US)
Pages (from-to)249-256
Number of pages8
JournalPacific Journal of Mathematics
Issue number1
StatePublished - Sep 1986


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