- #1

- 9

- 0

but I do not know how to prove an axiom.

Would you please teach me ?

How to prove an axiom ?

How did the axiomatic rules become axiom ?

I think some statements or formulas are axiomatic, although they seem unbelievable, for example,

https://www.physicsforums.com/showthread.php?s=&threadid=3876

(Volumes of Regular Icosahedron and Regular Tetrahedron ¡V

in the Mathematics forum of Physics Forums.)