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Informally, an algorithm is a set of explicit instructions used to solve a problem (e.g. Euclid's algorithm for computing the greatest common divisor of two integers). For more specific questions on algorithms, this tag may be used in conjunction with the approximation-algorithms, algorithmic-randomness and algorithmic-topology tags.

5 votes

How to recover integer part from known fractional root part?

Using the structure in the continued fraction expansion of a square root provides a relatively straightforward approach: expand out the continued fraction of $f$ until you see an initial segment that …
Steven Stadnicki's user avatar