- the first one has the same Kronecker column indices as B*s-A
- the second one has the same finite eigenvalues as B*s-A
- the third one has the same infinite eigenvalues as B*s-A
- the fourth one has the same Kronecker row indices as B*s-A

Note, that there is
also a Kronecker-pencil algorithm called **kroneck** built into
Scilab (see the Scilab-documentation for more details).

Thanks to Ricardo Zavala Yoe for testing the package and reporting a bug (which is already fixed).

The string is assumed to have linear elastic properties but the geometrical nonlinearities are regarded.

To run the script download it to a local directory,
change to that directory, launch scilab and run the command

**exec("nonlin_string.sci");**

After some computing time a
graphics window with the moving string should pop up.

A snapshoot is shown in the following picture:

Enjoy the show!