Originally Posted by
desiresjab
Now the big question? How much of basic arithmetic must be true in any universe we can conceive of--a universe of actual particles and physics, not just abstractions? Not enough is known about how particles come to exist in the first place to answer this authoritatively.
But even in our everyday world various algebraic structures have numerous and sometimes profound applications and implications, though they are not of our natural "home algebra." Each one of them defies axioms of our home arithmetic by tweaking just one or more deep properties, such as distribution across multiplication or association across addition, and letting the system run, so to speak. My belief is that the job is going to require all the tools of mathematics and likely some strains that are not invented yet.
Could a type of universe whose existence is impossible from our perspective ever make the leap from abstraction to reality? Does our inablity to imagine a universe make its existence impossible?