chapter 1 Singular Integrals and Integral Equations -- chapter 2 Sobolev-Slobodetskii Spaces -- chapter 3 Hypersingular Integral Equations -- chapter 4 Neumann Problem and Integral Equations with Double Layer Potential -- chapter 5 Spaces of Fractional Quotients and Their Properties -- chapter 6 Discrete Operators in Quotient Spaces -- chapter 7 Stability of Discrete Operators in Quotient Spaces -- chapter 8 Asymptotic Estimates of the Discrete Green Function -- chapter 9 Quadrature Formulas for Singular and Hypersingular Integrals -- chapter 10 Numerical Analysis of Hypersingular Integral Equations -- chapter 11 Problems in Aerodynamics -- chapter 12 Some Problems of Physics.