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A decomposition theorem for elliptic structures of minimal rank on compact Lie groups and applications
Abstract
We show that every left-invariant elliptic structure of minimal rank on an odd-dimensional compact Lie group admits an algebraic decomposition analogous to those obtained by Pittie in the complex case and by Charbonnel and Khalgui for left-invariant CR structures of hypersurface type. We then use this decomposition to prove that the cohomology associated with such an elliptic structure can be reduced to a computation on a suitable maximal torus.
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BibTeX
@misc{drei2026decomposition,
title = {{A decomposition theorem for elliptic structures of minimal rank on compact Lie groups and applications}},
author = {Guido Drei and Max Reinhold Jahnke},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.32335},
eprint = {2609.32335},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.32335},
}
RIS
TY - UNPB
TI - A decomposition theorem for elliptic structures of minimal rank on compact Lie groups and applications
AU - Guido Drei
AU - Max Reinhold Jahnke
PY - 2026
DA - 2026/09/26
PB - arXiv
DO - 10.48550/arxiv.2609.32335
UR - https://arxiv.org/abs/2609.32335
AB - We show that every left-invariant elliptic structure of minimal rank on an odd-dimensional compact Lie group admits an algebraic decomposition analogous to those obtained by Pittie in the complex case and by Charbonnel and Khalgui for left-invariant CR structures of hypersurface type. We then use this decomposition to prove that the cohomology associated with such an elliptic structure can be reduced to a computation on a suitable maximal torus.
ER -