Equality doesn't exist in mathematics. http://www.math.harvard.edu/~mazur/preprints/when_is_one.pdf http://www.math.harvard.edu/~mazur/preprints/when_is_one.pd

Equality doesn't exist in mathematics. http://www.math.harvard.edu/~mazur/preprints/when_is_one.pdf http://www.math.harvard.edu/~mazur/preprints/when_is_one.pdf The punchline: > In appropriate deference to the manifold ways an object can be presented to us, objects need only be given up to unique isomorphism, this being an enlightened view of what it means for one thing to be equal to some other thing.