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Omni-MATH / For x∈(0,1) let y∈(0,1) be the number whose n-th digit after the decimal point is the 2^(n)-th digit after the decimal point of x. Show that if x is rational then so is y. [i] · Discussion

Discussing For x∈(0,1) let y∈(0,1) be the number whose n-th digit after the decimal point is the 2^(n)-th digit after the decimal point of x. Show that if x is rational then so is y. [i] · Omni-MATH

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