In the late 1920s Alfred Tarski embarked on a project to give rigorous definitions for notions useful in scientific methodology.
A rigorous proof, a notion first set forth by Euclid around 300 B.C., is a progression of logic, starting from assumptions and arriving at a conclusion.
The most common method of making this idea precise and rigorous employs the notion of "escaping to infinity".
Baseball has long been resistant to the notion of rigorous, scientific analysis of pitching deliveries.
Throughout there is a rigorous commitment to some notion -- traditional or idiosyncratic -- of aesthetic quality; slacker-style delinquency is blessedly absent.
A rigorous introduction of that notion involves Dedekind's original idea of a chain".
The readers are referred to [28] for a rigorous discussion about the notion of average rate.
In the present note we provide such a rigorous study using the notion of wave-front set of a distribution.
A variation on this is Michael Porter's notion that rigorous domestic regulation provides a comparative advantage and nurtures lean, tough, scratch-your-eyes-out competitors.
There is a strange irony in the notion that grades assure rigor -- how rigorous can grades truly be when at some elite institutions an A has become the most commonly awarded grade?
