期刊
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS
卷 516, 期 1, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmaa.2022.126475
关键词
Submaximal symmetry for ODE; Symmetry gap problem; Cartan geometry
资金
- Norwegian Financial Mechanism 2014-2021 [2019/34/H/ST1/00636]
- Tromso Research Foundation (project Pure Mathematics in Norway)
This article presents the maximal contact symmetry dimensions for scalar ODEs and vector ODEs, along with the determination of submaximal symmetry dimensions using a Cartan-geometric approach. It also provides a classification of finer curvature-constrained submaximal symmetry dimensions.
The maximal contact symmetry dimensions for scalar ODEs of order >= 4 and vector ODEs of order >= 3 are well known. Using a Cartan-geometric approach, we determine for these ODEs the next largest realizable (submaximal) symmetry dimension. Moreover, finer curvature-constrained submaximal symmetry dimensions are also classified. (c) 2022 The Author(s). Published by Elsevier Inc.
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