Henry E. Fettis, Numerical Calculation of Certain Definite Integrals by Poisson's Summation Formula, Mathematical Tables and Other Aids to Computation, Vol. 9, No. 51 (Jul., 1955), pp. 85-92 ...

Oct. 29, 1675: Leibniz ∫ums It All Up 1675: Gottfried Leibniz writes the integral sign ∫in an unpublished manuscript, introducing the calculus notation that’s still in use today.

Summation theorems, a crucial subset of results in this area, provide closed‐form expressions for infinite series and facilitate both analytical manipulation and numerical evaluation.

Hypergeometric Functions and Summation Theorems Publication Trend The graph below shows the total number of publications each year in Hypergeometric Functions and Summation Theorems.