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How to solve invariant systems of differential equations on SL(2,R)?
Palmirotta, Guendalina
2023
 

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Abstract :
[en] In the Euclidean case, it is well-known, by Malgrange and Ehrenpreis, that linear differential operators with constant coefficients are solvable. However, what happens, if we genuinely extend this situation and consider systems of linear invariant differential operators, is still solvable? In the case of $\mathbb{R}^n$ (for some positive integer $n$), the question has been proved mainly by Hörmander. We will show that this remains still true for Riemannian symmetric spaces of non-compact type $X=G/K$, in particular for hyperbolic planes. More precisely, we will present a possible strategy to solve this problem by using the Fourier transform and its Paley-Wiener(-Schwartz) theorem for (distributional) sections of vector bundles over $\mathbb{H}^2=SL(2, \mathbb{R})/SO(2)$. This work was part of my doctoral dissertation supervised by Martin Olbrich.
Disciplines :
Mathematics
Author, co-author :
Palmirotta, Guendalina  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Mathematics (DMATH)
Language :
English
Title :
How to solve invariant systems of differential equations on SL(2,R)?
Publication date :
07 April 2023
Event name :
Journées SL2R à Reims 2023
Event organizer :
Laboratoire de Mathématiques de l'Université de Reims Champagne-Ardenne
Event place :
Reims, France
Event date :
06-04-2023 to 07-04-2023
Available on ORBilu :
since 19 April 2023

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