Homonym: Δ (Change)
The symbol "Δ" is the uppercase Greek letter Delta. In mathematics and science, it often represents change or difference, such as in the expression "Δx," which indicates a change in the variable x. It is widely used in various fields, including physics, engineering, and economics, to denote variations in quantities.
In addition to its mathematical significance, "Δ" is also used in the context of triangles in geometry, where it can symbolize a triangle itself. The lowercase version, "δ," is frequently used in calculus and physics to represent small changes or infinitesimal differences in values.