math

LaTex support (2020)

I used to use jsMath to support latex in this website, but it no longer works (I have no idea why). The one I...
Xu Cui
29 sec read

Recommend 3blue1brown

When I was in high school and saw the following equation, my mind was blown! $$1+\frac{1}{4}+\frac{1}{9}+\frac{1}{16}+…=\frac{\pi^2}{6}$$ Why is Pi here? Isn’t it supposed to...
Xu Cui
22 sec read

What is the probability that the sun will rise…

Laplace introduced the sunrise problem in 18th century. With prior knowledge that the sun has risen N days in the past consecutively (not knowing...
Xu Cui
1 min read