<p>Congrats, samiamy, on finding the right class/teacher “Russian Math physics professors”.
Russians teach math the way that it is not actually possible to forget it even if you are not using it in your profession. They teach UNDERSTANDING, not memorization, ability to think logically and knowing very few math fact derive whatever you need to solve the problem. Then physics and chemistry is taught for many years starting in 6th grade all thru HS and it all based on math. The level of science is linked to the level of math in grade.</p>