Fourier Integral Operators and Partial Differential Equations

Propagation des singularites des solutions dequations analogues a lequation de Schrdinger.- On the spectrum of positive elliptic operators and periodic bicharacteristics.- Clean intersection theory and Fourier Integrals.- Non-uniqueness for the Cauchy Problem.- Solutions asymptotiques et groupe symplectique.- Le polynome de Bernstein dune singularite isolee.- Fourier integral operators with complex-valued phase functions.- On a problem of Hans Lewy.- On structures of L2-well-posed mixed problems for hyperbolic operators.- Applications of fourier distributions with complex phase functions.- Second-order fuchsian elliptic equations and eigenvalue asymptotics.- On Maslovs quantization condition.