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Hi all,I have been wondering about infinity in mathematics. How can mathematical operations involving real, finite numbers give a sum of infinity?Even if you start with a very large number and multiply it or assign huge exponents to it, this should still generate a finite, albeit huge number. But such a number is still not even a small fraction of ...infinity.

There are some cases where this is not possible and you cannot prove that there are not any unexpected turns that could make the answer very wrong. At the moment the quantum theory of gravity is one of these.