👉 Rankless refers to a type of matrix in linear algebra, where all entries are 0 except for a single entry that is not zero. This single non-zero entry is called the "rank" or the "dimension" of the matrix. For example, consider the following matrix: ``` | 2 | 3 | | -1 | 4 | The rank of this matrix is 1 because it has only one non-zero entry (the second row). The rankless matrix would have