Results 31 to 40 of about 178,877 (207)

Orthonormal bases in the orbit of square-integrable representations of nilpotent Lie groups [PDF]

open access: yesJournal of Functional Analysis, 2017
Let $G$ be a connected, simply connected nilpotent group and $\pi$ be a square-integrable irreducible unitary representation modulo its center $Z(G)$ on $L^2(\mathbf{R}^d)$.
K. Gröchenig, David Rottensteiner
semanticscholar   +1 more source

Further results on q-Lie groups, q-Lie algebras and q-homogeneous spaces

open access: yesSpecial Matrices, 2021
We introduce most of the concepts for q-Lie algebras in a way independent of the base field K. Again it turns out that we can keep the same Lie algebra with a small modification.
Ernst Thomas
doaj   +1 more source

On lie nilpotent group rings

open access: yesJournal of Pure and Applied Algebra, 1985
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Levin, Frank, Sehgal, Sudarshan
openaire   +2 more sources

Ricci-flat and Einstein pseudoriemannian nilmanifolds

open access: yesComplex Manifolds, 2019
This is partly an expository paper, where the authors’ work on pseudoriemannian Einstein metrics on nilpotent Lie groups is reviewed. A new criterion is given for the existence of a diagonal Einstein metric on a nice nilpotent Lie group.
Conti Diego, Rossi Federico A.
doaj   +1 more source

Linear Dynamical Systems of Nilpotent Lie Groups [PDF]

open access: yesJournal of Fourier Analysis and Applications, 2021
25 pages; to appear in J.
Ingrid Beltiţă, Daniel Beltiţă
openaire   +3 more sources

Around theorems of Ingham-type regarding decay of Fourier transform on Rn, Tn and two step nilpotent Lie groups

open access: yesBulletin des Sciences Mathématiques, 2019
Classical results due to Ingham, Levinson and Paley-Wiener characterize the existence of nonzero functions supported on certain subsets of the real line in terms of the pointwise decay of the Fourier transforms.
Mithun Bhowmik, S. K. Ray, Suparna Sen
semanticscholar   +1 more source

Integrability properties of quasi-regular representations of $NA$ groups

open access: yesComptes Rendus. Mathématique, 2022
Let $G = N \rtimes A$, where $N$ is a graded Lie group and $A = \mathbb{R}^+$ acts on $N$ via homogeneous dilations. The quasi-regular representation $\pi = \mathrm{ind}_A^G (1)$ of $G$ can be realised to act on $L^2 (N)$. It is shown that for a class of
van Velthoven, Jordy Timo
doaj   +1 more source

Curvature in nilpotent Lie groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1964
Colloq. Algebraic Topology, 1962, pp. 104-113, Matematisk Institut, Aarhus Universitet, Denmark. 4. M. F. Atiyah, Thom complexes, Proc. London Math. Soc. (3) 11 (1961), 291310. 5. M. F. Atiyah and J. A. Todd, On complex Stiefel manifolds, Proc. Cambridge Philos. Soc. 56 (1960), 342-353. 6. Sze-Tsen Hu, Homotopy theory, Pure and Applied Mathematics VIII,
openaire   +1 more source

Group algebras and Lie nilpotence

open access: yesJournal of Algebra, 2013
Let \(F\) be a field of characteristic zero or odd prime characteristic \(p\), \(G\) a group, \(FG\) the group algebra. The authors continue their research on the properties of symmetric and skew-symmetric elements of \(FG\) with respect to an algebra involution \(*\) induced by an involution on the group, communicated in a series of papers, recent ...
GIAMBRUNO, Antonino   +2 more
openaire   +3 more sources

Quantizations on Nilpotent Lie Groups and Algebras Having Flat Coadjoint Orbits [PDF]

open access: yesJournal of Geometric Analysis, 2016
For a connected simply connected nilpotent Lie group $$\textsf {G}$$G with Lie algebra $${{\mathfrak {g}}}$$g and unitary dual $$\widehat{{\textsf {G}}}$$G^ one has (a) a global quantization of operator-valued symbols defined on $$\textsf {G}\times ...
M. Măntoiu, Michael Ruzhansky
semanticscholar   +1 more source

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