@phdthesis{champagne:pastel-00000920, TITLE = {{M{\'e}thodes de factorisation des {\'e}quations aux d{\'e}riv{\'e}es partielles.}}, AUTHOR = {Champagne, Isabelle}, URL = {https://pastel.hal.science/pastel-00000920}, SCHOOL = {{Ecole Polytechnique X}}, YEAR = {2004}, MONTH = Oct, KEYWORDS = {Ondes guid{\'e}es ; Plongement invariant ; D{\'e}composition modale ; Edpr ; Pde ; Waveguides ; Invariant embedding ; Riccati ; Helmholtz ; Resonances ; Dirichlet-to-Neumann ; Modal decomposition}, TYPE = {Theses}, PDF = {https://pastel.hal.science/pastel-00000920/file/champagne.pdf}, HAL_ID = {pastel-00000920}, HAL_VERSION = {v1}, }