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Log_10 of the error of a continued fraction approximation of Pi to k terms
Approximation of real numbers by rationals
The question of finding rational approximations to real numbers was first explored by the Greek scholar Diophantus of Alexandra (c. 201-285 BCE), and continues to fascinate mathematicians today, in a field known as Diophantine approximations.
It is easy to see that any real number can be approximated to any desired accuracy by simply taking the sequence of approximations given by the decimal digits out to some point, divided by the appropriate power
Continue reading New paper proves 80-year-old approximation conjecture