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189 people work at LJLL

86 permanent staff

80 researchers and permanent lecturers

6 engineers, technicians and administrative staff

103 non-permanent staff

74 Phd students

15 post-doc and ATER

14 emeritus scholars and external collaborators


January 2022


2013-GdT ITER - R. Hiptmair

Séance du 28 février 2013


Ralph Hiptmair, ETH Zurich


 Title :
Sparse Tensor Product Edge Elements

Speaker :
Ralf Hiptmair, Seminar for Applied Mathematics, ETH Zurich, Switzerland

Co-authors :
C. Jerez-Hanckes, C. Schwab

Abstract :

We consider the tensorized operator for the Maxwell cavity source problem in frequency domain. Such formulation occurs when computing statistical moments of the fields under an stochastic volume excitation. We establish a discrete inf-sup condition for its Ritz-Galerkin discretization on sparse tensor product edge element spaces built on nested sequences of meshes. Our main tool is a generalization of the edge element Fortin projector to a tensor product setting. The techniques extend to the surface boundary edge element discretization of tensorized electric field integral equation operators.

Reference : SAM-Report 2012-34 (