Dergiler / Turkish Journal of Mathematics / 2013 / Cilt: 37 - Sayı: 6

Cartan equivalence problem for third-order differential operators

Sayfa
949–958
DOI
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Özet

This article is dedicated to solving the equivalence problem for a pair of third-order differential operators on the line under general fiber-preserving transformation using the Cartan method of equivalence. We will treat 2 versions of equivalence problems: first, the direct equivalence problem, and second, an equivalence problem to determine conditions on 2 differential operators such that there exists a fiber-preserving transformation mapping one to the other according to gauge equivalence.

Abstract

This article is dedicated to solving the equivalence problem for a pair of third-order differential operators on the line under general fiber-preserving transformation using the Cartan method of equivalence. We will treat 2 versions of equivalence problems: first, the direct equivalence problem, and second, an equivalence problem to determine conditions on 2 differential operators such that there exists a fiber-preserving transformation mapping one to the other according to gauge equivalence.

Anahtar kelimeler: Differential operator, Cartan equivalence, gauge equivalence, invariant, pseudogroup, Lie algebra