Conjecture on rational approximations with prescribed numbers of prime divisors
Let be a real number, let , let , and let be a natural number. Suppose that there are integers with and such that
Prescribed-prime-divisors conjecture. There is a rational number such that , , and
This asserts that a rational approximation can be replaced by one with a prescribed number of distinct prime divisors in its denominator, with only a small loss in the approximation exponent. The supplied text gives heuristic motivation and related corollaries, but no resolution.
References
Primary source
Tsz Ho Chan, “Approximating reals by sums of rationals”, arXiv:0704.2805 (2007).
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