Problem 851
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As your posts will be visible to the general public you are requested to be thoughtful in not posting anything that might explicitly give away how to solve a particular problem.
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Don't start begging others to give partial answers to problems
Don't ask for hints how to solve a problem
Don't start a new topic for a problem if there already exists one
See also the topics:
Don't post any spoilers
Comments, questions and clarifications about PE problems.
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pri_gua
Problem 851
What is a strictly positive integer? Can we change the wording to: "Let n be a positive integer and let E_n be the set of n-tuples of positive integers."
- hk
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Re: Problem 851
What a strictly positive integer is can be found on the web.
Google for: strictly positive or strictly positive integer.
Google for: strictly positive or strictly positive integer.

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- heteroing
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Re: Problem 851
Saying only "positive" rather than "strictly positive" may introduce ambiguity (for some) since some may consider 0 to be a positive integer. Rather than assert these people are all definitely wrong, I think it's better to use an extra word to make sure it's absolutely clear what they mean here.
