Visit the Expii Site Created by Professor Po-Shen Loh

As the national lead coach of the USA International Mathematical Olympiad team, a MOP instructor since 2002, and a silver medalist at the 1999 IMO, Professor Po-Shen Loh and his team consisting of the most prestigious students in olympiad math hope to create a site providing the most extensive and interactive source of mathematical or scientific information ever, for all to share. Begun just this month, Expii aims to present thorough explanations of mathematical concepts, starting with calculus. For highly detailed and useful resource for anyone who might like to gain some knowledge about math or science over the summer, visit Expii at! Anyone who would be interested in contributing to this site, please email Eric Xu at This email address is being protected from spambots. You need JavaScript enabled to view it. to receive a referral code.

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This site is maintained by Kasra Lekan. 


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