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Oct
5
revised Convexity of a function and constraint
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Oct
5
awarded  Scholar
Oct
5
accepted Evaluate $\sum_{k=1}^n\lfloor \sqrt{k} \rfloor$
Oct
5
asked Convexity of a function and constraint
Oct
5
asked Sum of a floor function
Oct
5
comment Evaluate $\sum_{k=1}^n\lfloor \sqrt{k} \rfloor$
For which values of m is this sum $\sum_{k=1}^n \lfloor \sqrt(k) \rfloor$ divisible by m?
Oct
4
awarded  Student
Oct
4
comment Evaluate $\sum_{k=1}^n\lfloor \sqrt{k} \rfloor$
It may not be useful at all but I was hoping it might be!
Oct
4
asked Evaluate $\sum_{k=1}^n\lfloor \sqrt{k} \rfloor$