**What is Math** ?

https://infinityplusonemath.wordpress.com/2017/06/17/what-is-math/

**Mathematics**= “*that which is learned*“ –(Pythagoras)

Math is not about calculation, it is understanding the nature, the universe, the philosophy (logic, intelligence – both “human” and “artificial”)…

What is Axiom, Lemma, Proposition ? Why rigorous Calculus was needed hundred years afterNewton & Leibnizhad invented it – “Epsilon-Delta” Analysis.

**Difference between Riemann Integral & Lebesgue Integral ?**