We know computers can work out large number a arithmatical sums quite rapidly. But comoputers have to be told what to do and when! The main problem is whether its possible to use computers to use intricate problems involving a few real life parameters. This is what Karamarkar did. He invented a powerful new method that solves many complex problems faster and more efficiently than any previous method. For example his method could decide how to build economic telephone links in America between cities, so that STD calls can go from one city to any other. The number of possiblities is large and picking the most economic one is difficult. Karmarkar's method saved more than several crores of dollars. He worked with American Airlines to provide the best linkages between any two cities. His methods can cut fuel costs substatially. Karmarkar is now at the Tata Institute of Fundamental Research, setting up a new department of mathematics at the Institute to solve similiar problems facing India.

---