Math Stash — free ISI, CMI and Olympiad math preparation: proof-based notes on number theory, geometry, inequalities and combinatorics for ISI and CMI entrance, RMO, INMO and IMO

Math Stash

Free proof-based preparation for ISI, CMI and Olympiad aspirants. Every plate shows one idea from number theory, geometry, inequalities or combinatorics, drawn from its definition, so you learn the proof, not just the answer.

3^{2} + 4^{2} = 5^{2}

Math Stash · ISI · CMI · Olympiad

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Math Stash is a community archive for ISI, CMI and Olympiad aspirants. Learn mathematics through proofs, use them in your own solutions, and grow with the help of fellow students. All of it is free.

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π = lim_{n \to \infty} n \sin (\frac{π}{n})

Math Vanguard · Resource Vault

The vault for every aspirant.

Math Vanguard is a resource vault for all ISI, CMI and Olympiad aspirants. Find the study resources you need for your preparation, gathered in one place.

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