Talk:Generalized pencil-of-function method

Clarification by editing
Reading this article has really been a big help to me at understanding how I may retrieve more information from a response function, more specifically the response of the temperature inside my house to outdoor (weather) as well as indoor (e.g. gas heating) influences from measurement data over a long time interval. (If I can discover enough response in the form of slowly decaying exponentials, that would suggest insulating the thermally slow parts of house is worthwhile.)

But I would like to suggest some edits in order to make understanding the flow (not necessarily the details; that might be too much to expect from a Wikipedia article) of the text easier. I am thinking of:
 * 1) defining $$[\Sigma']$$, before it is used;
 * 2) defining $$[V']$$ and explaining how it is obtained, before it is used;
 * 3) and maybe, if that is not already a detail, explaining why $[Y][Y]^H$  and $[Y]^H[Y]$  represent the eigenvectors of $[U]$  and $[V]$ .Redav (talk) 21:37, 1 June 2020 (UTC)

Why not use names $$[X_1]$$ and $$[X_2]$$ for matrices containing elements called $$x(i)$$?
The article uses notation $$[Y_1]$$ and $$[Y_2]$$ for matrices containing $$x(i)$$. For ease of reading, I propose using $$[X_1]$$ and $$[X_2]$$ instead.Redav (talk) 20:13, 26 May 2021 (UTC)