I thought much of the quantum infinities had been excluded by pegging values to those ‘twenty odd’ fundamental numbers. Weight of a proton, etc. meaning, the possible universes were few.
but I’m certainly no expert. I find the non Euclidean geometry and higher dimensional studies fascinating.
Yes, from my vague understanding, that was the basis for coming up with string theory in the first place. To put a lower limit on the size of quantum entities. Otherwise, current mathematics treat individual entities as though they had zero volume, as dimensionless ‘point’ particles.