** Up:** Variable stars: Which Nyquist

Theoretically, *p* could be found using an extension to more
than 2 numbers of the Euclid gcd algorithm. But in practice,
the are not known to infinite precision, and the
Euclid algorithm is numerically unstable for non integer
numbers. A practical solution could then be to stop the algorithm
when the smallest number is smaller than some .Otherwise, the spectral window is probably the most efficient
way to find *p* in this fuzzy environment. *p* is the inverse
of the smallest for which is greater than some
value just below one.

** Up:** Variable stars: Which Nyquist

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