👉 In mathematics, a pilastric (also known as a pila stric) is an object in the mathematical theory of groups. It refers to a set that can be divided into two non-empty subsets - one larger than the other - such that every element in the smaller subset has an inverse in the larger subset. For example, consider the group \( \mathbb{Z}_{2} \times \mathbb{Z}_{3} \) where \( \mathbb{Z