Flip and pair: notation with meaning

Exercise and reference answers

Matching pairs

1. A

   A′ or Aᵀ

   B

   transpose of A

2. A

   A⁻¹

   B

   inverse of A

3. A

   I

   B

   identity matrix

4. A

   aᵢⱼ

   B

   entry in row i, column j

5. A

   m × n

   B

   order of a matrix

6. A

   kA

   B

   every entry multiplied by k

Explanation