How do I use summation notation with infinity? Precalculus Series Summation Notation 1 Answer vince Mar 11, 2015 Hello, You write #sum_{k=0}^\infty u_k# to write #lim_{n\to infty} sum_{k=0}^n u_k#, if (of course) this limit exists ! Answer link Related questions What is summation notation? What are some examples of summation notation? What is a sample summation notation problem? How do I use summation notation on a calculator? How do I use summation notation to write the series 2 + 4 + 6 +... for 10 terms? How do I use summation notation to write the series 2.2 + 8.8? How do I use summation notation to write the series 2.2 + 6.6? How do I use summation notation to write the series 2.2 + 6.6 + 11? What is the difference between a sequence and a series in math? Question #c0cfe See all questions in Summation Notation Impact of this question 2577 views around the world You can reuse this answer Creative Commons License