
From:  Rowan Cannaday 
Subject:  Re: Linear Algebra assistance 
Date:  Wed, 29 Apr 2020 02:48:42 +0000 
 RowanI believe I've figured out what was confusing me. The notation used in Golub/Van Loan is referred to as "block matrix notation".If only there was some sort of... universal math notation that didn't rely on pertopic experience and context clues... ;)On Tue, Apr 28, 2020 at 9:04 PM Ala'a Mohammad <address@hidden> wrote:Hi,I assumed that same technique can be used for QR algorithm. check the algorithm section.Regards,Ala'aOn Wed, Apr 29, 2020 at 12:54 AM Rowan Cannaday <address@hidden> wrote:Thank you. The Cholesky decomposition is related but not what I'm implementing at the moment. However this will likely be useful in the future.Even the name "QR algorithm" seems to be something of a misnomer. From the wikipedia page:" in the modern implicit version of the procedure no QR decompositions are explicitly performed, some authors, for instance Watkins,^{[8]} suggested changing its name to Francis algorithm" RowanOn Tue, Apr 28, 2020, 4:37 PM Ala'a Mohammad <address@hidden> wrote:Hi,This may be related: https://www.dyalog.com/blog/2015/01/choleskydecomposition/HiH.Regards,Ala'aOn Wed, Apr 29, 2020 at 12:24 AM Rowan Cannaday <address@hidden> wrote: RowanCheers y'all.Figured it would be worth a shot.The 4th edition should be available as a PDF online (although I will not link to it), and my specific question is linked below:Any other communities that might be able to assist me is also helpful  for example a mailing list.Is anybody familiar with the QR algorithm, or the notation used in Golub & Van Loan's book "Matrix Computations"?I am working my way towards building an APL linear algebra toolkit, and am having trouble deciphering what some of the steps signify.
https://math.stackexchange.com/questions/3648588/implementingqralgorithmfromgolubvanloansmatrixcomputationsnotati
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