Introduction 13 Function Space and Operator Theory for Nonlinear Analysis Introduction 1 Lp-Sobolev spaces 2 Sobolev imbedding theorems 3 Gagliardo-Nirenberg-Moser estimates 4 Tmdinger's inequalities 5 Singular integral operators on Lp 6 The spaces Hs,p 7 Lp-spectral theory of the Laplace operator 8 Holder spaces and Zygmund spaces 9 Pseudodifferential operators with nonregular symbols 10 Paradifferential operators 11 Young measures and fuzzy functions 12 Hardy spaces References