What's the most important postulate in mathematics that has no proof?

What's the most important postulate in mathematics that has no proof?

1+1=2

x=x (1)

at least there is this

Godel BTFO that shit.

abc conjecture

Navie stokes. Everything else is autistic jerk off.

>does an odd perfect number exist
Will unlock the secrets of the universe and make all the panties around you automatically wet once you solve it.

Navier-Stokes is a meme

Numerical methods are all you'll ever need

>He hasn't even mastered Hodge Theaters
>He doesn't know that mathematicians are mostly interested in PDEs to see the path to their solutions than the solutions themselves.