continuous fraction造句

In 1897, he defended his doctoral thesis " On a generalisation of a continuous fraction ".
I suspect that this result is related to Khinchin's work on metric properties of continuous fractions, but I do not believe that authoritative sources support the name given ( as a side note, when I stumbled across this article, it was using a completely unconventional spelling of Khinchin's name ).
It's difficult to find continuous fraction in a sentence. 用continuous fraction造句挺难的