Notation | Explanation |
---|---|
⊗ | Kronecker product |
I _{ n} | n × n identity matrix |
O _{ n × m} | n × m matrix of zeros |
1 _{ n × m} | n × m matrix of ones |
blkdiag[A_{1} A_{2} ⋯ A_{n}] | A block diagonal matrix with matrices {A_{k}}_{1 ≤ k ≤ n} on the main diagonal |
rank[A] | Rank of matrix A |
rank[A] | Linear subspace spanned by the column vectors of matrix A |
A ^{1/2} | Square root of matrix A |
A ^{†} | Moore–Penrose inverse of matrix A |
Π^{⊥}[A] | Orthogonal projection matrix onto the orthogonal subspace of range[A] |