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Some constructions of formally self-adjoint conformally covariant polydifferential operators
Case, Jeffrey S. Lin, Yueh-Ju Yuan, Wei
Case, Jeffrey S.
Lin, Yueh-Ju
Yuan, Wei
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2022-03-10
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Conformally variational invariant,Conformally covariant operator
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Case, J. S., Lin, Y.-J., & Yuan, W. (2022, March 10). Some constructions of formally self-adjoint conformally covariant polydifferential operators. Advances in Mathematics. Retrieved April 4, 2022, from https://www.sciencedirect.com/science/article/abs/pii/S0001870822001281?via%3Dihub
Abstract
We introduce the notion of formally self-adjoint conformally covariant polydifferential operators and give some constructions of families of such operators. In one direction, we show that any homogeneous conformally variational scalar Riemannian invariant (CVI) induces one of these operators. In another direction, we use the ambient metric to give alternative constructions of certain operators produced this way, one of which is a formally self-adjoint, fourth-order, conformally covariant tridifferential operator which should be regarded as the simplest fully nonlinear analogue of the Paneitz operator.
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Elsevier
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Advances in Mathematics;2022
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0001-8708