All ageing mathematicians should be particularly pleased to learn that a second piece of work by Elliott, which was again of major importance, was his contribution to the theory of integral equations which he made after he retired.
Lahat ng ageing mathematicians ay dapat na lalo na natutuwa sa malaman na ang isang ikalawang piraso ng trabaho sa pamamagitan ng Elliott, na kung saan ay muli ng malaking kahalagahan, ay kanyang kontribusyon sa teorya ng integral equation na kung saan ginawa niya pagkatapos siya nagretiro.