On the Universal L-Algebroid of Linear Foliations
Journal of Lie Theory, Volume 33 (2023) no. 3, pp. 925-952
We compute an $L_\infty$-algebroid structure on a projective resolution of some classes of singular foliations on a vector space $V$ induced by the linear action of some Lie subalgebras of $\mathfrak{gl}(V)$. This $L_\infty$-algebroid provides invariants of the singular foliations, and also provides a constant-rank replacement of the singular foliation. The computation consists of first constructing a projective resolution of the foliation induced by the linear action of the Lie subalgebra $\mathfrak{g}\subset \mathfrak{gl}(V)$, and then computing the $L_\infty$-algebroid structure. We then generalize these constructions to a vector bundle $E$, where the role of the origin is now taken by the zero section $L$.\\ We then show that the fibers over a singular point of a projective resolution of any singular foliation can be computed directly from the foliation, without needing the projective resolution. For linear foliations, we also provide a way to compute the action of the isotropy Lie algebra in the origin on these fibers directly from the foliation.
DOI: 10.5802/jolt.1313
Classification: 22E45, 13D02, 17B55
Keywords: Singular foliations, L-infinity-algebroids, projective resolutions
@article{JOLT_2023_33_3_a12,
     author = {K. J. Singh},
     title = {On the {Universal} {L\protect\textsubscript{\ensuremath{\infty}}-Algebroid} of {Linear} {Foliations}},
     journal = {Journal of Lie Theory},
     pages = {925--952},
     year = {2023},
     volume = {33},
     number = {3},
     doi = {10.5802/jolt.1313},
     zbl = {1525.22008},
     url = {https://jolt.centre-mersenne.org/articles/10.5802/jolt.1313/}
}
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K. J. Singh. On the Universal L-Algebroid of Linear Foliations. Journal of Lie Theory, Volume 33 (2023) no. 3, pp. 925-952. doi: 10.5802/jolt.1313

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