👉 In mathematics, a sporangium (or spin) is a type of non-abelian group. It is defined as a group that has an element of order 2 and no other elements with this property. These groups are named after their structure.
A sporangium is a group in which every element has an even number of conjugacy classes, and all the odd-numbered conjugacy classes contain at least one element of order 2. This is known as the "odd-ness
sporangium