Many problems in science and engineering have their mathematical formulation as an operator equation of the form F(x) = y, where F is a linear or nonlinear operator between certain function spaces. In practice, such equations are solved approximately using numerical methods, as their exact solution may not be often possible or may not be worth looking for due to physical constraints. In such situation, it is desirable to know how the so-called approximate solution approximates the exact solution, and what would be the error involved in such procedures. The main focus of the book is on the...

Fight against polio is successfully concluded in India and many countries across the world. The battle against eradication of disability from clubfoot is just begun and we will win only if compulsory and complete treatment is given to over 220,000 children born with clubfoot in the developing world every year.
A world free of disability from clubfoot is possible when Ponseti method of clubfoot treatment reaches every child born with clubfoot successfully. Myths and misunderstanding leaves thousands of children untreated. Just getting the foot in normal corrected position using plaster...