A square matrix B=bijn×n is said to be a scalar matrix, if

A square matrix B=bijn×n is said to be a scalar matrix, if bij=0 when i≠j ,bij=k when i=j for some constant k

A square matrix B=bijn×n is said to be a scalar matrix, if

A square matrix B=bijn×n is said to be a scalar matrix, if bij=0 when i≠j ,bij=k when i=j for some constant k

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A square matrix $B = {[b_{ij}]}_{n \times n}$ is said to be a scalar matrix, if

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$b_{i j} = 0 for i \neq j and b_{i j} = k for i = j$ , for some constant k

$b_{i j} = 0 for i = j$

$b_{ij} \neq 0 for i = j and b_{ii} = 0 for i = j$

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A square matrix $B = {[b_{ij}]}_{n \times n}$ is said to be a scalar matrix, if $b_{i j} = 0 when i \neq j$ , $b_{i j} = k when i = j$ for some constant k

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A square matrix $B = {[b_{ij}]}_{n \times n}$ is said to be a scalar matrix, if