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[Marten Bauer <address@hidden>]

Hello,

I have the following matrix:

| g_11      0   |      | F_u*F_u   F_v*F_u|
|                    |  =  |                               |
|    0      g_22|      | F_u*F_v   F_v*F_v|

where F_u * F_v = 0 and F_v*F_u=0. I will show it like this

                                                 = 0
                                             /-------\
| g_11      0   |      | F_u*F_u   F_v*F_u|
|                    |  =  |                               |
|    0      g_22|      | F_u*F_v   F_v*F_v|
                            \--------/
                                 = 0

where \-----/ and /----\ are under- and overbraces.

When I try it with texmaxs as I know it (for F_v*F_u=0):
1. Mark F_v*F_u
2. ALT-O ALT-<OpeningBrace>
3. ALT-A (script above)
4. write =0
then the braces of the matrix will also grow up like

                          |                       = 0    |
                          |                  /-------\ |
| g_11      0   |      | F_u*F_u   F_v*F_u|
|                    |  =  |                               |
|    0      g_22|      | F_u*F_v   F_v*F_v|
                          | \--------/                |
                          |       = 0                   |

How can I change this behavior or use different way
to get the desired result?

Thx for Helping
Marten