1. A matrix of format over has which dimensions?
2. Which condition characterizes a square matrix of order ?
3. What distinguishes the identity matrix from a general square matrix of order ?
What is a matrix of format (n,p) over K?
A rectangular table with n rows and p columns whose entries belong to K.
What does K denote in a matrix over K?
The set of real numbers R or complex numbers C.
What defines a square matrix of order n?
A matrix with n rows and n columns.
What is a symmetric matrix?
A square matrix M where Mij equals Mji for every pair (i,j).
What is the identity matrix In of order n?
A diagonal matrix with all diagonal entries equal to 1.
When does the product AB of matrices A and B exist?
Only when A's columns equal B's rows.
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