From this discussion, the notion of expected value was introduced.

Earlier in this article, we introduced the notion of jurisdiction.

To do this, we introduce the notion of relative degree.

To this end, the notion of "free settlement" was introduced.

Building a home page was an easy way to introduce the notion under the guise of fun.

We have already introduced the notion of antecedents and consequences.

For instance, the notion of rules, which is not found in Leont'ev, was introduced.

Killing also introduced the notion of a root system.

In the 18th century, Euler introduced the notion of mathematical function.

More recently Gibbons and colleagues (1994) have introduced the notion of mode 2 knowledge production.