👉 Cuspa is a term used in mathematics to denote a specific type of rational number. It is often considered as a special case of irrationals, and it can be defined as the limit of a sequence of rational numbers approaching 0 from above. The concept of "cusp" or cusps in mathematics refers to points where an algebraic curve intersects itself at infinity (a point where the line segment joining two distinct points on the curve crosses itself). In other words, cusp is