In fact, the more general concept of factorial was found at the same time by Arbogast.

The modern concept of ecosystem services can be found in the late 19th century.

In this "tale" are found the concepts and purposes behind the novels.

The concept is actually more than a century old and could be found on horse-drawn buggies.

Some other borrowed concepts can be found across the series.

The concept of completeness is found in knowledge base theory.

This medieval concept was found to be the best solution to a late 20th-century problem.

The concept is also found in the theory of Lie algebras.

The concept of the seven rays can also be found in Theosophical works.

The concept of individual and common property is found among them.