Responses
Don't drag mathematics in such beautiful stories ......
XD
Maths is also beautiful
Maths is horrible
Whenever I read 'Jensen' it reminds me of
the 'Jensen's inequality'.
You know,
f({a+b}/2)≤ {f(a)+f(b)}/2
For f(x) being a concave up curve
And vice versa.
Most math enthusiasts would know this. Especially if you ever prepared for IMO(International Mathematical Olympiad) in your life.