# Primitive matrices

Is this definition for primitive matrices correct?

A square matrix $P \geqslant 0$ is called primitive if there exists a power $k$ such that $P^k > 0,$ that is, there exists a $k$ such that for all ${ij},$ the entries $ij$ are positive.

I read it in the Internet but it was not referenced.

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This is not a real question. What do you want to know? –  Mariano Suárez-Alvarez Dec 2 '11 at 7:28
I want to know the definition of primitive matrices? –  Zizo Dec 2 '11 at 7:30
I've reformatted the question what do you think of it now? –  Zizo Dec 2 '11 at 7:32
Wikipedia uses the definition you gave. –  lhf Dec 2 '11 at 11:04