Sigma Symbol (Σ) - Mathematical Summation Notation Explained #2258845 (License: Personal Use)

This high-contrast image features the uppercase Greek letter Sigma (Σ) in vibrant lime green with a bold dark green border, set against a pure black background for maximum visibility. The clean, geometric design emphasizes its role as a universal symbol for summation in mathematics, physics, engineering, and data science. Its sharp lines and scalable vector appearance make it ideal for digital and print educational materials.

Used on educational websites, math tutorials, STEM resource pages, or documentation where explaining summation notation is required; matches user intent seeking visual reference for the Σ symbol in equations or programming contexts.