Problems from Indian mathematics.
Project Brahmagupta is an archive of १०८ problems in mathematics and computation, drawn from and inspired by the works of Indian mathematicians.
Contribute a problemFAQs
A few common questions. Anything else? Send a note via the contribute page.
What is Project Brahmagupta?
An open archive of 108 problems in mathematics and computation, inspired by the works of Indian mathematicians from antiquity to the present. Some problems are classical, some are modern and written in the same spirit.
When did it launch?
1 July 2026. From that day, one problem unlocks each midnight India Standard Time, for 108 days.
Who is this for?
Anyone with a working knowledge of mathematics who enjoys turning ideas into code. The problems range in difficulty: some are accessible with high-school algebra, others reward graduate-level number theory or careful computation.
Can I submit a problem?
Yes. The contribute page accepts proposals. We are looking for problems honest to Indian mathematical material, either drawn from an Indian source or new problems that share the spirit of the collection.
Is it open source?
Yes. The site code is MIT-licensed; the content is licensed under CC BY 4.0. The repository lives on GitHub.
Will solutions be published?
Not on the site. In keeping with the Project Euler tradition, problems are released without solutions: you discover them by solving. A discussion forum may follow once the series is complete.