Well there is this famous paper by Volovich [1] where he argues that space is basically pixelized and p-adic numbers might best describe their geometry. But of

Well there is this famous paper by Volovich [1] where he argues that space is basically pixelized and p-adic numbers might best describe their geometry. But of course this has no connection with the reality we have access to. p-adic numbers are also used in various areas of number theory (not my expertise). I see them like the lesser known sibling of real numbers. [1] https://empslocal.ex.ac.uk/~mwatkins/zeta/volovich1.pdf https://empslocal.ex.ac.uk/~mwatkins/zeta/volovich1.pdf