# Compact Notation of RxN Mechanism

1. Aug 27, 2010

Hello all!

I am reading through a combustion text and I am a little flustered by this notation:

Am I correct in saying that the "coefficient matrices" {${\nu'_{ji}}$} and {${\nu''_{ji}}$} are not really "proper" matrices in the sense that there is not a vector that can multiply them that will result in the system of equations given by 4.29? Or is there? And I am just too tired to figure this out?

Also, the fact that the ij indices are reversed from normal convention (i.e., i = row index and j=column index) is really driving me batty!

2. Aug 27, 2010

I guess if we multiply $\nu'_{ji}$ by the column vector
$$\left( \begin{array}{c} X_1\\X_2\\X_3\\X_4\\X_5\\X_6\\X_8 \end{array}\right)$$