
Linear Algebra Linear Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
March 22nd, 2015, 04:41 AM  #1 
Newbie Joined: Mar 2015 From: bulgaria Posts: 1 Thanks: 0  ultra diagonal matrix, super diagonal matrix, sub diagonal matrix
Hi There! What are ultra super and subdiagonal matrices? Thanks Silvia 
March 22nd, 2015, 05:25 AM  #2 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,261 Thanks: 894 
The "super diagonal" of a matrix is the diagonal of entries immediately above the main diagonal. The "sub diagonal" of a matrix is the diagonal of entries immediately below the main diagonal. A "super diagonal matrix" is a matrix that has nonzero entries only on its main diagonal and the diagonal immediately above that. A "sub diagonal matrix" is a matrix that has nonzero entries only on its main diagonal and the diagonal immediately below that. I have never seen the phrase "ultra diagonal matrix" nor am I able to look it up. 
March 22nd, 2015, 05:28 AM  #3 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,851 Thanks: 1075 Math Focus: Elementary mathematics and beyond  silviatodorof, please do not post duplicate threads.


Tags 
diagonal, matrix, super, ultra 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
The sum of diagonal block matrix  nbdxkfq  Linear Algebra  0  August 23rd, 2013 07:53 PM 
diagonal matrix  lamhmh  Applied Math  2  July 11th, 2011 12:12 PM 
To Check whether Matrix is diagonal?  knowledgegain  Linear Algebra  1  May 3rd, 2009 01:05 PM 