SumConvergence
SumConvergence[f,n] gives conditions for the sum ∑f to be convergent.
SumConvergence[f,{n1,n2,…}] gives conditions for the multiple sum to be convergent.
SumConvergence[f,{n,a,∞}] gives conditions for the sum to be convergent on the interval [a,∞).
SumConvergence[f,{n,a,∞},…,{m,b,∞}] gives conditions for the multiple sum to be convergent.
Examples
Test convergence of 1/n^2:
SumConvergence[1/n^2, n]
(* True *)Test convergence with a parameter:
SumConvergence[1/n^p, n]
(* p > 1 *)Please visit the official Wolfram Language Reference for more details.