What is Local mathematics? Local mathematics is the study of verses. It is called local mathematics because all verses are different. Local mathematics can be quite useful in knowing how our Universe works. If all goes well, someday local mathematics can prove or disprove Everett's many worlds interpretation.
The basis of all local mathematics is the laws of physics, and the laws of chemistry. With those rules in mind, we can work out the laws of biology, the way verses would behave, etc... So local mathematics can be quite a useful subject if you know any physics, or any chemistry.