My Math Forum  

Go Back   My Math Forum > College Math Forum > Linear Algebra

Linear Algebra Linear Algebra Math Forum


Reply
 
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 sub-diagonal matrices?

Thanks
Silvia
silviatodorof is offline  
 
March 22nd, 2015, 05:25 AM   #2
Math Team
 
Joined: Jan 2015
From: Alabama

Posts: 3,248
Thanks: 887

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 non-zero entries only on its main diagonal and the diagonal immediately above that.

A "sub diagonal matrix" is a matrix that has non-zero 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.
Country Boy is offline  
March 22nd, 2015, 05:28 AM   #3
Global Moderator
 
greg1313's Avatar
 
Joined: Oct 2008
From: London, Ontario, Canada - The Forest City

Posts: 7,825
Thanks: 1051

Math Focus: Elementary mathematics and beyond
silviatodorof, please do not post duplicate threads.
greg1313 is offline  
Reply

  My Math Forum > College Math Forum > Linear Algebra

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





Copyright © 2018 My Math Forum. All rights reserved.