Edit this page Talk0. The Greek alphabet is used extensively in mathematics and the physical sciences to stand for well known constants, variables, functions, and so forth.
The question calls for examples of irony. This answer provides many examples of irony (each bulleted item is an example of irony), and explains the different ways in which they are ironic. The most common form of irony is when the spoken words do not convey the underlying meaning.
Socratic Irony - The everyday irony that, today, we identify in simple cases of verbal 'irony' has its origin in [the] Socratic technique of eironeia. We use a word but expect others to recognise that there is more to what we are saying than the uses of everyday language.