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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
It seemed clear enough from the examples to me, but I added that part to the description too. Thanks for your feed :)
I still miss mentioning that we only look for reduced fractions between 0 and 1.
Fair enough: I added an edit at the end of the kata mentioning you; regrettably changing name, functions and more would give serious problems to the codewarrios who already solved it.
Sorry for the mishap!
Mh, good point, but I have seen conflicting ideas on this: can you point me some reference on it?