1) A game played by mathematicians where the goal is to describe
simple occurrences in the most complicated, confusing way possible.
2)
Math that is
done with discretion.
1) For all X1 and all X2, such that X1 and X2 are elements of the set of all
real numbers, X1=X2 implies that F(X1)=F(X2). In other
words, if you put the same number into your function that you already put in you are unlikely to get a different result.
2) Jack did not believe the waitress when she told him that his martini came to $9.37 after tax so he did some discrete
math under his coat to double check her.