Penrose graphical notation

Penrose graphical notation is a way of drawing diagrams to represent mathematical ideas. It uses symbols like circles, lines and arrows to show relationships between numbers, shapes and other ideas. For example, a line with an arrow pointing up could mean ‘add two’, while a circle with three arrows pointing in different directions could mean ‘take the average’. By combining these symbols, it’s easy for mathematicians to quickly understand concepts that would be difficult to explain using words.