James John Smith (24 June 1892 – October 1983) was an Irish applied mathematician and electrical engineer.
His career was mostly spent at General Electric (GE) in Schenectady, New York.
His father Christopher Smith was an inspector of schools, so the family moved a lot, and James grew up in part in Cork city.
[1] He earned a diploma in engineering from the Royal College of Science in Dublin, and then two master's from University College Dublin (UCD), first in maths (1913) and then in maths physics and experimental physics (1914).
He was an Invited Speaker of the ICM in 1928 at Bologna, Italy with the talk Heaviside's operators and contour integrals[3] and in 1932 at Zürich with the talk An expression of Green's function in generalized coordinates.