This popular problem is stumping everyone, and many, many people emailed it to me. I give extra thanks Chaitanya from India who was the first person who sent it to me. I also thank David K, Achille Hui, and Seyed who found geometric solutions to this problem…

Michael Atiyah, a British mathematician who united mathematics and physics during the 1960s in a way not seen since the days of Isaac Newton, died on Friday 11th of January. He was 89 years old. ° ° °#mathsbeauty #maths #math #mathematician #mathematicus…

Programa de Mestrado: Combinatória I - Aula 02 Professor: Robert Morris Homepage: https://impa.br/~rob Aulas anteriores: https://goo.gl/j453Mz Conjuntos: teo...

In this video, I derive the formulas for cosh and sinh from scratch, and show that they are indeed the hyperbolic versions of sin and cos. I also explain what the input x of cosh(x) means. Included is a calculation of the integral of sqrt(x^2-1)


Note: A…

A fun discrete math problem! We were asked to find x so that fractional part of x, the floor of x and x are in geometric progression! Thanks to Shivam Verma for informing me that this is a Pre RMO problem, regional math olympiad 2017. VERY COOL!

brilliant.org:…

Thanks to mike4ty4 for suggesting this fun problem, Integral of sqrt(lnx),
Check out the imaginary error function erfi(x), https://youtu.be/zorcLisjRUI

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Solution: https://youtu.be/6dTyOl1fmDo
Light-based solution: https://youtu.be/brU5yLm9DZM
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