Let R be a relation on A and be a function. We say that f preserves the relation iff a R b implies f(a) R f(b). what do we call functions from R to R ( real numbers) that preseves the relation?
Let R be a relation on A and be a function. We say that f preserves the relation iff a R b implies f(a) R f(b). what do we call functions from R to R ( real numbers) that preseves the relation?