Is there a symbol for the idea of the smallest value greater than zero? I know that it isn't actually a number but I do think it's a concept in mathematics. So the question is, is there a symbol representing this concept? I thought maybe it was Phi but I couldn't find it for sure anywwhere.
Answer I was looking for (but inadvertantly phrased in such a way that caused much distress to this community):
"In floating-point computing that would be epsilon." –  uncle brad

In floating-point computing that would be epsilon.
