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Fundamental Subspaces Toolbox v1.1

FILE INFORMATION

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fundspace.zip
Filename fundspace.zip (Download)
Title Fundamental Subspaces Toolbox v1.1
Description Functions for the rank, nullity, row space, column space, and null space of a matrix.
Author Bennett Kalafut (bkalafut@email.arizona.edu)
Category TI-89 BASIC Math Programs (Linear Algebra, Vector, Matrix)
File Size 1,657 bytes
File Date and Time Tue Sep 26 00:24:10 2000
Documentation Included? Yes

SCREEN SHOTS

REVIEWS

Review
Review by  Alejandro Frenkel
Reviewed on 2009-11-10
The toolbox is excellent, though the "null" and "nullt" functions are not working in some cases -> they can return a basis with 1 vector when nullity is 2. I think (not 100% sure) I found a way to correct it, and is to change the nullt function to the following:

(a)

Func

Local nty, cola

colDim(a)→cola

toolbox\nullity(a)→nty

If nty=0:Return "Nonexistent"

augment(a,identity(rowDim(a)))→a

Return (subMat(ref(a),cola+1-nty,colDim(a)-rowDim(a)+1))T

EndFunc


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ARCHIVE CONTENTS

Archive Contents
Name Size
fundspac.89g   805
fundspace.txt   2091

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