Description

SumS[1, m] is the harmonic number SumS[1,1,m] is (i)/i. SumS[k,l,m] is . SumS[r, n] represents Sum[Sign[r]^i/i^Abs[r], {i, 1, n}]. SumS[r,s, n] is Sum[Sign[r]^k/k^Abs[r] Sign[s]^j/j^Abs[s], {k, 1, n}, {j, 1, k}], etc.

See also: SumP, SumT.

Examples

The FeynCalc Book

SumP

SumT