👉 In mathematics, "begirding" refers to a type of combinatorial object that is not part of any given set or collection but instead appears as an isolated element within another structure. It's like a special kind of point in geometry where you can't see it from the outside, but you know it exists. For example, consider the following geometric shape: A square with four sides. The "begirding" part is that the square has 4 sides - this means each side