👉 In classical mathematics, "supremum" is a word that refers to a number or quantity so high as to be greater than all other numbers or quantities. In set theory and topology, "surjection" means a function from one set to another has an inverse function if the domain of the function is finite. However, in the context of mathematics, "supremum" refers to a limit point (a number that is not less than any other number). It's used in calculus to
