### Author of ZTGEVC sought

Posted:

**Thu Sep 20, 2018 10:15 am**ZTGEVC can be used to compute the user's selection of generalized right/left eigenvectors for the triangular matrix pencil (A,B).

I am studying the source code and have questions that I would dearly like to ask the author related to the construction and solution of certain triangular linear systems Cx = (aA-bB)x = 0.

Obviously, if there exist text discussing the construction of a and b, I would like to obtain a copy.

My immediate goal is to understand why the code is correct and obtain a complete list of the underlying assumptions, such as explicit bounds on the input.

If possible, please alert the author to this message.

I am studying the source code and have questions that I would dearly like to ask the author related to the construction and solution of certain triangular linear systems Cx = (aA-bB)x = 0.

Obviously, if there exist text discussing the construction of a and b, I would like to obtain a copy.

My immediate goal is to understand why the code is correct and obtain a complete list of the underlying assumptions, such as explicit bounds on the input.

If possible, please alert the author to this message.