Information about 3 Indian & 3 foreign mathematicians.
You'll find information about dozens of mathematicians -- from India and other places in the world -- in these sites.
http://www-groups.dcs.st-and.ac.uk/~history/BirthplaceMaps/Countries/India.html
http://www-groups.dcs.st-and.ac.uk/~history/BiogIndex.html
To find information about three Indian mathematicians, you can visit the following websites:
1. The website http://www-groups.dcs.st-and.ac.uk/~history/BirthplaceMaps/Countries/India.html is a part of the MacTutor History of Mathematics archive. It provides a comprehensive list of Indian mathematicians, along with their birthplace and brief biographical details. You can click on the names of the mathematicians to access more detailed information about their work and contributions to mathematics.
2. The website http://www-groups.dcs.st-and.ac.uk/~history/BiogIndex.html is also a part of the MacTutor History of Mathematics archive. It offers an index of mathematicians from various countries, including India. You can search for Indian mathematicians by either scrolling down the page to find the section on India or by using the search function on the page. Clicking on a mathematician's name will take you to their biography and further information about their accomplishments.
For information about three foreign mathematicians, you can also use the second website mentioned above, which covers mathematicians from all around the world. Simply use the search function or scroll through the index to find the names of foreign mathematicians you are interested in learning about.
These websites provide reliable and well-documented information on the history of mathematics and the biographies of mathematicians, making them valuable resources for your search.