Is the study of Calculus, ODEs and PDEs the absolute most important field of Mathematics? Is it the end-all and reason-to-be of every single other branch of mathematics?
>>8631564
No, not at all.
>>8631564
Calculus and Calculus-based DEs are not a field of mathematics, they are classes for engineers.
>>8631564
They are the most important for physics, I guess.
>>8631582
Physics 1 is not a field of Physics.
>>8631564
ODEs is dead and replaced by Dynamical Systems and Chaos
You also forgot Algebra and Geometry.