Types: N/A
Examples: N/A
Constructions: N/A
Generalizations: N/A
Properties: N/A
Sufficiencies: N/A
Questions: N/A
Entries of a Matrix
- A zero entry of a matrix is an entry
- A nonzero entry of a matrix is an entry
- The leading entry of a row of a matrix is the first nonzero element in that row when reading from left to right (this is a nonzero entry of a row with smallest column index).
Remark. Leading entries are used in solution techniques for 2B The General Linear-Systems Problem, 3 The Full-Rank Least-Squares Problem, and 4 The Standard Eigenvalue Problem.