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Prime numbers, diophantine equations, diophantine approximations, analytic or algebraic number theory, arithmetic geometry, Galois theory, transcendental number theory, continued fractions

18 votes
1 answer
580 views

Characterizing the elements of $(A-A)/(A-A)$, where $A$ is a Cantor-like subset of the integers

Short version of my question: I'm interested in the following fact. If $m,n$ are odd integers, then $m/n$ can be written as the ratio of two numbers of the form $\sum_{j=0}^\ell \epsilon_j 4^j$, wher …
Alan C's user avatar
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