Hi, This is my first blog. I encountered a problem PAROVI few days ago, but I am not able to solve it. Any ideas on how to proceed? Thankyou.
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Hi, This is my first blog. I encountered a problem PAROVI few days ago, but I am not able to solve it. Any ideas on how to proceed? Thankyou.
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Define by $$$f(l, r)$$$ the number of sets of pairs of relatively prime integers of $$$l, l + 1, \ldots, r$$$, and by $$$g(l, r)$$$ the number of sets of pairs of relatively prime integers of $$$l, l + 1, \ldots, r$$$ such that there is no $$$x$$$ among $$$l + 1, \ldots, r$$$ satisfying Slavko's constraint. Then we have the equality