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\title{A Simple Sum}
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\begin{center}\LARGE\bfseries{}
A Simple Sum
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\medskip
\par{This is a simple summation formula: \[ \sum_{k=1}^{n} {k } \ = \  \frac{n(n+1)}{2} \ \ \ . \] It may be proved easily using mathematical induction. \ 
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\par{Mathematical induction is part of deductive, not inductive, logic. \  
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