Mohan, Lalit2025-11-132025-02-04https://ir.iitd.ac.in/handle/123456789/7595enM-elliptic pseudo-differential operatorsPartial differential equationsHarmonic and microlocal analysisParabolic equationsSymbolic calculus and parametrixHarmonic and non-harmonic analysis of pseudo-differential and fourier integral operatorsThesis