I would like to label rows and columns of my matrix with formulas and text. I've started with a version using bordermatrix
.
\[ \underbrace{ \bordermatrix{ & \underset{\downarrow}{x} & \underset{\downarrow}{c} \cr
(17') \rightarrow & \dfrac{n}{\eta \cdot \delta} & \dfrac{1}{\lambda} \cr
(16') \rightarrow & \dfrac{1-s_R}{\delta} & - \dfrac{\frac{\lambda-1}{\lambda}}{\rho + \frac{n}{\eta} - n} } }_{\text{coefficient matrix } \Delta} \cdot \begin{pmatrix} \widetilde{x} \\ \widetilde{c} \end{pmatrix} = \begin{pmatrix} 1 \\ 0 \end{pmatrix} \]
But furthermore I need to
- only apply the 1 big underbrace for the main matrix
- apply similar braces for single rows and columns (additional or instead of the rightarrow/downarrow)
Thank you very much for advice.
Best Answer
Here is one option using
\bordermatrix
that provides what you're after:\overbrace
s are stretched to the widest element in each column using\hphantom
, while care is taken to remove the left-most row indices from the\underbrace
yet restoring their horizontal space outside of the\bordermatrix
construction.For having left braces to identify/mark the rows, you could use the following: