👉 In mathematics, a "packwall" is a mathematical object that encodes information about a group and its subgroups. A packwall is a tuple of two objects, one from each of the groups involved in the packing. The first object is the identity element of the group whose size is equal to the number of elements in the group; the second object is the subgroup whose order is equal to the number of elements in the group. For example, consider a finite group G with two subgroups