title: With Julia Symbolics, how can I do a mathematical summation?
body: <p>I am using Symbolics.jl and I want to make a mathematical summation, equivalent to the function Sum from Sympy (<a href="https://docs.sympy.org/latest/modules/concrete.html" rel="nofollow noreferrer">https://docs.sympy.org/latest/modules/concrete.html</a>)</p>
  <p>The documentation of Symbolics.jl suggests that it is possible:</p>
  <blockquote>
  <ul>
  <li>Discrete math (representations of summations, products, binomial coefficients, etc.)</li>
  </ul>
  </blockquote>
  <p>However, in the frequently asked questions, the opposite is suggested:</p>
  <blockquote>
  <p>Loops are allowed, but the amount of loop iterations should not require that you know the value of the symbol x.</p>
  </blockquote>