Definition:Periodic Continued Fraction/Purely Periodic
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Definition
A periodic continued fraction is a purely periodic continued fraction if its partial denominators are of the form:
- $\sqbrk {\sequence {s_1, s_2, \ldots, s_n} }$
That is, all of its partial denominators form a block which repeats itself indefinitely.
Cycle
The repeating block in a periodic (or purely periodic) continued fraction $F$ is called the cycle of $F$.