<div>I did it before correctly lon gtime ago, but right now whatever I do it does not work,</div>
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<div>how can I put prime over a summation with LaTeX </div>
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<div>e.g.</div>
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<div>$$\sum_{k=1}^{\infty}'$$</div>
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<div>this does not look normal, the prime does not look at the correct location</div>
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<div>here the prime must be at the right upper edge of the summation symbol.</div>