Abstract
Every simply connected and connected solvable Lie group đș admits a simply transitive action on a nilpotent Lie group đ» via affine transformations.
Although the existence is guaranteed, not much is known about which Lie groups đș can act simply transitively on which Lie groups đ».
So far, the focus was mainly on the case where đș is also nilpotent, leading to a characterization depending only on the corresponding Lie algebras and related to the notion of post-Lie algebra structures.
This paper studies two different aspects of this problem.
First, we give a method to check whether a given action
Funding source: Fonds Wetenschappelijk Onderzoek
Award Identifier / Grant number: G.0F93.17N
Funding source: Australian Research Council
Award Identifier / Grant number: DP190100317
Funding statement: The first author is supported by a postdoctoral fellowship of the Research Foundation â Flanders (FWO). The second author was supported by the Research Foundation â Flanders (FWO Project G.0F93.17N), CONICET (Argentina) and ARC (Australia) DP190100317.
Acknowledgements
Most of the work has been written during the post-doctoral position at KU Leuven, Campus Kulak Kortrijk of the second named author. He is grateful to the department for the hospitality.
Communicated by: Anna Wienhard
References
[1] A. Andrada, M. L. Barberis, I. G. Dotti and G. P. Ovando, Product structures on four dimensional solvable Lie algebras, Homology Homotopy Appl. 7 (2005), no. 1, 9â37. 10.4310/HHA.2005.v7.n1.a2Search in Google Scholar
[2] L. Auslander, Simply transitive groups of affine motions, Amer. J. Math. 99 (1977), no. 4, 809â826. 10.2307/2373867Search in Google Scholar
[3] Y. Benoist, Une nilvariĂ©tĂ© non affine, C. R. Acad. Sci. Paris SĂ©r. I Math. 315 (1992), no. 9, 983â986. 10.4310/jdg/1214456006Search in Google Scholar
[4] Y. Benoist, Une nilvariĂ©tĂ© non affine, J. Differential Geom. 41 (1995), no. 1, 21â52. 10.4310/jdg/1214456006Search in Google Scholar
[5] Y. Benoist and K. Dekimpe, The uniqueness of polynomial crystallographic actions, Math. Ann. 322 (2002), no. 3, 563â571. 10.1007/s002080200005Search in Google Scholar
[6] A. Borel, Linear Algebraic Groups, 2nd ed., Grad. Texts in Math. 126, Springer, New York, 1991. 10.1007/978-1-4612-0941-6Search in Google Scholar
[7] D. Burde, Affine structures on nilmanifolds, Internat. J. Math. 7 (1996), no. 5, 599â616. 10.1142/S0129167X96000323Search in Google Scholar
[8] D. Burde, K. Dekimpe and S. Deschamps, Affine actions on nilpotent Lie groups, Forum Math. 21 (2009), no. 5, 921â934. 10.1515/FORUM.2009.045Search in Google Scholar
[9] D. Burde and F. Grunewald, Modules for certain Lie algebras of maximal class, J. Pure Appl. Algebra 99 (1995), no. 3, 239â254. 10.1016/0022-4049(94)00002-ZSearch in Google Scholar
[10] S. Console and A. Fino, On the de Rham cohomology of solvmanifolds, Ann. Sc. Norm. Super. Pisa Cl. Sci. (5) 10 (2011), no. 4, 801â818. 10.2422/2036-2145.2011.4.02Search in Google Scholar
[11] W. A. de Graaf, Computation with Linear Algebraic Groups, Monogr. Res. Notes Math., CRC Press, Boca Raton, 2017. 10.1201/9781315120140Search in Google Scholar
[12] K. Dekimpe, Semi-simple splittings for solvable Lie groups and polynomial structures, Forum Math. 12 (2000), no. 1, 77â96. 10.1515/form.1999.030Search in Google Scholar
[13] J. Deré, Nil-affine crystallographic actions of virtually polycyclic groups, preprint (2019), https://arxiv.org/abs/1810.11290. 10.1007/s00031-021-09673-wSearch in Google Scholar
[14] N. Dungey, A. F. M. ter Elst and D. W. Robinson, Analysis on Lie Groups with Polynomial Growth, Progr. Math. 214, BirkhÀuser Basel, 2003. 10.1007/978-1-4612-2062-6Search in Google Scholar
[15] J. E. Humphreys, Linear Algebraic Groups, Grad. Texts in Math., Springer, New York, 1981. Search in Google Scholar
[16] H. Kasuya, Algebraic hulls of solvable groups and exponential iterated integrals on solvmanifolds, Geom. Dedicata 162 (2013), 263â270. 10.1007/s10711-012-9725-1Search in Google Scholar
[17] H. Kasuya, Minimal models, formality, and hard Lefschetz properties of solvmanifolds with local systems, J. Differential Geom. 93 (2013), no. 2, 269â297. 10.4310/jdg/1361800867Search in Google Scholar
[18] H. Kim, Complete left-invariant affine structures on nilpotent Lie groups, J. Differential Geom. 24 (1986), no. 3, 373â394. 10.4310/jdg/1214440553Search in Google Scholar
[19] J. Milnor, On fundamental groups of complete affinely flat manifolds, Adv. Math. 25 (1977), no. 2, 178â187. 10.1016/0001-8708(77)90004-4Search in Google Scholar
[20] M. S. Raghunathan, Discrete Subgroups of Lie Groups, Ergeb. Math. Grenzgeb. (3) 68, Springer, New York, 1972. 10.1007/978-3-642-86426-1Search in Google Scholar
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Articles in the same Issue
- Frontmatter
- Indecomposable involutive solutions of the YangâBaxter equation of multipermutational level 2 with abelian permutation group
- Extrapolation to product Herz spaces and some applications
- The exact number of orthogonal exponentials on the spatial Sierpinski gasket
- A note on special cubic fourfolds of small discriminants
- Strong multiplicity one for Siegel cusp forms of degree two
- GrossâPrasad periods for reducible representations
- LS-category of moment-angle manifolds and higher order Massey products
- Estimates of heat kernels of non-symmetric Lévy processes
- Global continuity of variational solutions weakening the one-sided bounded slope condition
- Finitary birepresentations of finitary bicategories
- Solvability for nonlocal boundary value problems with generalized đ-Laplacian on an unbounded domain
- Conformal Killing forms on 2-step nilpotent Riemannian Lie groups
- Simply transitive NIL-affine actions of solvable Lie groups
- Mahler measure of 3D LandauâGinzburg potentials
Articles in the same Issue
- Frontmatter
- Indecomposable involutive solutions of the YangâBaxter equation of multipermutational level 2 with abelian permutation group
- Extrapolation to product Herz spaces and some applications
- The exact number of orthogonal exponentials on the spatial Sierpinski gasket
- A note on special cubic fourfolds of small discriminants
- Strong multiplicity one for Siegel cusp forms of degree two
- GrossâPrasad periods for reducible representations
- LS-category of moment-angle manifolds and higher order Massey products
- Estimates of heat kernels of non-symmetric Lévy processes
- Global continuity of variational solutions weakening the one-sided bounded slope condition
- Finitary birepresentations of finitary bicategories
- Solvability for nonlocal boundary value problems with generalized đ-Laplacian on an unbounded domain
- Conformal Killing forms on 2-step nilpotent Riemannian Lie groups
- Simply transitive NIL-affine actions of solvable Lie groups
- Mahler measure of 3D LandauâGinzburg potentials