Module series_api 

Summation, products, series and formal-power-series methods on Ex. Summation, products, and series extension methods on Ex.

• Ex::summation / Ex::try_summation — symbolic Σ
• Ex::product_over / Ex::try_product_over — symbolic Π
• Ex::hypergeometric_ratio — the term ratio t(k+1)/t(k)
• Ex::is_absolutely_convergent — absolute convergence of Σ t(k)
• Ex::series_at_infinity / Ex::series_at_neg_infinity — asymptotic expansions