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 Matrices:     more books (100)

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1. S.O.S. Mathematics - Matrix Algebra
S.O.S. Mathematics Matrix Algebra The matrix algebra index begins with applications and properties of matrices, works through systems of linear equations, explains determinants (including
http://rdre1.inktomi.com/click?u=http://www.sosmath.com/matrix/matrix.html&y

2. QuickMath Matrices
QuickMath matrices. The command has been relocated. You seconds. If this does not work, please use this link QuickMath matrices.
http://www.quickmath.com/www02/pages/modules/matrices/inverse/basic/index.shtml

3. An Introduction To MATRICES
An introduction to matrices. transpose. Then a i,j = a j,i , for all i and j. The sum of matrices of the same kind. Sum of matrices. To
http://www.ping.be/~ping1339/matr.htm

Extractions: Theorem 5 A matrix is an ordered set of numbers listed rectangular form. Example. Let A denote the matrix This matrix A has three rows and four columns. We say it is a 3 x 4 matrix. We denote the element on the second row and fourth column with a If a matrix A has n rows and n columns then we say it's a square matrix. In a square matrix the elements a i,i , with i = 1,2,3,... , are called diagonal elements.

4. LMS Regional Meeting, Bristol 2001
LMS regional meeting and workshop. Bristol, UK; 12 and 1314 September 2001.
http://www.maths.bris.ac.uk/~majm/LMS/

5. Linear Equations, Matrices, Determinants
Linear equations, matrices, determinants. fundamentals. Rank of a matrix and inverse of a matrix. Singular and regular matrices. If
http://www.ping.be/~ping1339/stels2.htm

Extractions: Application about lines in a plane In previous articles, we have seen the fundamental properties of linear equation systems, matrices and determinants. In this part II, we bring these concepts together and we'll find many relations between these fundamentals. If the determinant of a square matrix is 0, we call this matrix singular otherwise, we call the matrix regular. Take a fix matrix A. By crossing out, in a suitably way, some rows and some columns from A, we can construct many square matrices from A. The number of rows of that matrix is called the rank of A. Replace each element of A with its own cofactor and transpose the result, then you have made the adjoint matrix of A. Theorem : When we multiply the elements of a row of a square matrix with the corresponding cofactors of another row, then the sum of these product is 0.

6. Matrices And Determinants
matrices and determinants. Algebra index. History Topics Index. The beginnings of matrices and determinants goes back to the second century BC although traces can be seen back to the fourth century
http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Matrices_and_determinants

Extractions: The beginnings of matrices and determinants goes back to the second century BC although traces can be seen back to the fourth century BC. However it was not until near the end of the 17 th Century that the ideas reappeared and development really got underway. It is not surprising that the beginnings of matrices and determinants should arise through the study of systems of linear equations. The Babylonians studied problems which lead to simultaneous linear equations and some of these are preserved in clay tablets which survive. For example a tablet dating from around 300 BC contains the following problem:- There are two fields whose total area is square yards. One produces grain at the rate of of a bushel per square yard while the other produces grain at the rate of a bushel per square yard. If the total yield is bushels, what is the size of each field. The Chinese, between 200 BC and 100 BC, came much closer to matrices than the Babylonians. Indeed it is fair to say that the text Nine Chapters on the Mathematical Art written during the Han Dynasty gives the first known example of matrix methods. First a problem is set up which is similar to the Babylonian example given above:-

7. Pacific Analytical: Environmental Analyses For Dioxins, PCBs, Volatile And Semiv
Specialist in low level analyses for volatile and semivolatile organics, pesticides/herbicides, PCBs, dioxins by GC, GCMS, and HRGCMS. Offers methods development for waters, soils, organic matrices in Carlsbad, CA.
http://www.pacificanalyticalinc.com/

Extractions: Analysis of Hazardous Wastes, Wastewater, Drinking Water, Soil, Sediments, and Tissues By GC, GCMS, HRGC/HRMS, HPLC For Volatile organics, Semivolatile organics, Pesticides/Herbicides, Dioxins/Furans, PCBs pacific analytical carlsbad laboratory analysis chemistry hazardous TCDD dioxin furan PCB pesticide polychlorinated biphenyl volatile semivolatile spectrometry chromatography mass gas environmental analysis Pacific Analytical, Inc., is an innovative, high technology chemical analysis laboratory offering services ranging from routine analyses to analytical methods and software development. We specialize in chemical analysis measurements where complex sample media, low concentrations, and/or unusual analytes challenge the capabilites of ordinary laboratories. Founded in 1985, Pacific Analytical is employee-owned and operated with an excellent technical staff who take pride in their ability to provide for our clients' special needs. Regardless of the number of samples or the difficulty of the analysis, Pacific Analyticals commitment is to deliver documented high-quality analyses in the most efficient and cost effective manner possible. We maintain an extensive in-house QA/QC program which includes strict chain-of-custody procedures, laboratory quality control and complete final review of all reported data. This assures that our customers receive complete reports which fully document data quality.

8. Matrices
Watch us work! Home Free Study Aids Study Guides Math matrices Table of Contents. Summary. Terms. matrices. Problems. Multiplication. Problems.
http://www.sparknotes.com/math/algebra2/matrices/

9. NIWMS-2000 - Ninth International Workshop On Matrices And Statistics
Ninth International Workshop on matrices and Statistics, in celebration of C.R. Rao's 80th Birthday. Hyderabad, India; 913 December 2000.
http://eos.ect.uni-bonn.de/HYD2000.htm

10. Weight Matrices For Sequence Similarity Scoring
Weight matrices for Sequence Similarity Scoring. Version 2.0 May 1996. David Weight matrices for Sequence Similarity Scoring. Outline Objective
http://www.techfak.uni-bielefeld.de/bcd/Curric/PrwAli/nodeD.html

Extractions: Table of Contents Weight matrices for sequence similarity scoring Importance of scoring matrices Examples of matrices Log odds matrices ... Other specialized scoring matrices Objective: Overview of methods and theories that underlie the construction of scoring matrices. Examples of weight matrices for nucleotide and amino acid scoring. Transition probability matrix: PAM BLOSUM matrix Practical aspects Other refinements to transition probability matrices. D.G. George, W. C. Barker and L. T. Hunt. (1990). Mutation Data Matrix and Its Uses. in Methods in Enzymology vol 183; R.F. Doolittle, ed. pp. 333-351. Academic Press, Inc. New York. M.O. Dayhoff (1978) Atlas of Protein Sequence and Structure (Natl. Biomed. Res. Found., Washington), Vol. 5, Suppl. 3, pp. 345-352. S.F. Altschul (1991). Amino acid substitution matrices from an information theoretic perspective. J. Mol. Biol. 219 555-565.

11. PAM Matrices
PAM matrices. There are several common ways in which weights can be applied for amino acid differences. This results in a family of scoring matrices.
http://helix.biology.mcmaster.ca/721/distance/node9.html

Extractions: Next: BLOSUM Matrices Up: Amino acid distance Previous: Amino acid distance There are several common ways in which weights can be applied for amino acid differences. Karlin and Ghandour (1985, PNAS 82:8597) proposed a method of weights based on chemical, functional, charge and structural properties of the amino acids. Similarly Doolittle proposed weights based on the structural similarities and the ease of genetic interchange (Feng et al ., 1985 J. Mol. Evol. 21: 112). However, by far the most common and most famous way to assign weights is to use Dayhoff's PAM250 matrix. This is a matrix of weights that is derived from how often different amino acids replace other amino acids in evolution (see M.O. Dayhoff, ed., 1978, Atlas of Protein Sequence and Structure, Vol5). This was based on a data base of 1,572 changes in 71 groups of closely related proteins appearing in earlier volumes of this amazing predecessor to electronic databases. PAM stands for percent accepted mutations and these were inferred from the types of changes observed in these proteins. Every change was tabulated and entered in a matrix enumerating all possible amino acid changes. In addition to these counts of accepted point mutations an idea of the relative mutability of different amino acids were calculated. The information about the individual kinds of mutations and about the relative mutability of the amino acids can be combined into one distance-dependent "mutation probability matrix". The elements of this matrix give the probability that the amino acid in one column will be replaced by the amino acid in some row after a given evolutionary interval. For example, a matrix with an evolutionary distance of PAMs would have ones on the main diagonal and zeros elsewhere. A matrix with an evolutionary distance of

12. Matrix Workshop
Manipulates matrices of both real and complex numbers. Win95/98/Me/NT/2000

Extractions: web hosting domain names email addresses Matrix Workshop manipulates matrices of both real and complex numbers. Matrices of up to 50 by 50 are supported. This utility can create a number of special matrices as well as user defined matrices. It also supports the ability to save matrices to disk, loading matrices from disk, printing matrices as well as clipboard support. A comprehensive help tutorial comes with the program. Free to try. US\$10.00 if you keep it. To download click on the file name below: MWSMWS.ZIP (1 040 384 Bytes) To register online click here Home

13. BLOSUM Matrices
BLOSUM matrices. The BLOSUM matrices originate with a paper by Henikoff and Henikoff (1992; PNAS 891091510919). Their idea was
http://helix.biology.mcmaster.ca/721/distance/node10.html

Extractions: Next: GAP WEIGHTING Up: Amino acid distance Previous: PAM Matrices The BLOSUM matrices originate with a paper by Henikoff and Henikoff (1992; PNAS 89:10915-10919). Their idea was to get a better measure of differences between two proteins specifically for more distantly related proteins. While this bias limits the usefulness of BLOSUM matrices for some purposes, for other programs such as FASTA, BLAST, etc. it should do substantially better. This is because the need for an accurate measure of distance is not as great when peptides are more closely related. They use the BLOCKS database to search for differences among sequences but only among the very conserved regions of a protein family. Hence the term BLOSUM is from BLOcks SUbstitution Matrix. They first collect all of the sequences in the BLOCKS database and then for each one they sum the number of amino acids in each site to get a frequency table ( ) of how often different pairs of amino acids are found together in these conserved regions. Hence the observed frequency of occurrence of one amino acid is Given pairs should occur with frequencies and The odds matrix is . Generally 's are taken of this matrix to give a or lod matrix such that Hence if the observed number of differences between a pair of amino acids is equal to the expected number than . If the observed is less than expected then and if the observed is greater than expected All of this gives the BLOSUM matrix. Different levels of the BLOSUM matrix can be created by differentially weighting the degree of similarity between sequences. For example, a BLOSUM62 matrix is calculated from protein blocks such that if two sequences are more than 62% identical, then the contribution of these sequences is weighted to sum to one. In this way the contributions of multiple entries of closely related sequences is reduced.

14. Some Codes
Examples for q up to 9.
http://www.mathi.uni-heidelberg.de/~yves/Matritzen/Codes/CodeMatIndex.html

Extractions: Check- or generator matrices of some linear codes I give here check- or generator matrices of some linear codes. Most of these codes were found by computer search. Codes cited in older papers, whose parameters are implied by other codes given here, are set italic. Look at caps for codes with distance 4. home

15. MATRICES
Translate this page matrices. El número total de elementos de una matriz Am×n es m·n En matemáticas, tanto las Listas como las Tablas reciben el nombre genérico de matrices.
http://personal5.iddeo.es/ztt/Tem/T6_Matrices.htm

Extractions: En 1858, A. Cayley introduce la notación matricial como una forma abreviada de escribir un sistema de m ecuaciones lineales con n incógnitas. Las matrices se utilizan en el cálculo numérico, en la resolución de sistemas de ecuaciones lineales, de las ecuaciones diferenciales y de las derivadas parciales. Además de su utilidad para el estudio de sistemas de ecuaciones lineales, las matrices aparecen de forma natural en geometría, estadística, economía, informática, física, etc... La utilización de matrices (arrays) constituye actualmente una parte esencial dn los lenguajes de programación, ya que la mayoría de los datos se introducen en los ordenadores como tablas organizadas en filas y columnas : hojas de cálculo, bases de datos,... Una matriz es un conjunto de elementos de cualquier naturaleza aunque, en general, suelen ser números ordenados en filas y columnas. Se llama matriz de orden "m

16. Substitution Matrices
Substitution matrices. In aligning two protein sequences, some method must be used to score the alignment of one residue against another. Widely used matrices.
http://arep.med.harvard.edu/seqanal/submatrix.html

17. PRESENTACION
matrices, troqueles sistemas de ensamblaje de conjuntos de chapa para el autom³vil.
http://www.inmapa.com/presentacion.htm

Extractions: Quisiéramos presentarles una empresa que no es mas que el fruto del sacrificio de una familia, que esta depositando en ella lo mejor que cada uno tiene. Poseemos los ingredientes fundamentales de progreso, Ideas e ilusión que junto a una total aportación personal nuestra y la inestimable colaboración de un gran equipo humano (mas de 130 trabajadores) ha situado a IN.MA.PA. en el futuro. Nuestra apuesta por el trabajo en equipo nos ha conducido a una mayor humanización de la tecnología. En IN.MA.PA creemos en las personas, por lo tanto nuestros éxitos se fundamentan en la implicación humana en cualquier futuro proyecto. Empresa dedicada desde sus inicios a la matricería, en la actualidad cuenta con una larga y demostrada experiencia, no sólo en este campo, sino también en: Maquinaria especial, automatismos, copiado electrónico, utillaje diverso, fabricación seriada, estampación hasta 1000 Tm., ensambles, soldadura, instalaciones montaje y soldadura llave en mano. Se cuenta también con la ingeniería propia para desarrollar: Proyectos (mecánico y automatológico).

18. Matrices And Arrays (Getting Started)
Manipulating matrices. matrices and Magic Squares, Enter matrices, perform matrix operations, and access matrix elements. Expressions,
http://www.mathworks.com/access/helpdesk/help/techdoc/learn_matlab/ch3getti.html

19. Departamento De Matemáticas -- UCA
Teor­a, problemas y soluciones (pdf). Universidad de C¡diz.
http://matematicas.uca.es/empres/analisis/

Extractions: Análisis Matemático Curso 2003-2004 Asignatura Análisis Matemático LADE Curso Primero Horas semanales Anual Examen final Programa de la asignatura 03/04 Profesores de la asignatura Horario de tutorias Fechas de exámenes 03/04 ... Calificaciones de la convocatoria de Gracia de Análisi Matemático I Teoría Problemas Resolución Tema 1 Tema 1 Tema 1 Tema 3 ... Tema 4 Tema 4:

20. Linear Algebra :: Functions -- Categorical List (MATLAB Functions)
Arrays and matrices. cumprod, Cumulative product. cumsum, Cumulative sum. diag, Diagonal matrices and diagonals of matrix. dot, Vector dot product. end, Last index.
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/func_b11.html

Extractions: MATLAB Function Reference Linear Algebra Matrix Analysis cond Condition number with respect to inversion condeig Condition number with respect to eigenvalues det Determinant norm Matrix or vector norm normest Estimate matrix 2-norm null Null space orth Orthogonalization rank Matrix rank rcond Matrix reciprocal condition number estimate rref Reduced row echelon form subspace Angle between two subspaces trace Sum of diagonal elements Linear Equations Linear equation solution chol Cholesky factorization cholinc Incomplete Cholesky factorization cond Condition number with respect to inversion condest 1-norm condition number estimate funm Evaluate general matrix function inv Matrix inverse linsolve Solve linear systems of equations lscov Least squares solution in presence of known covariance lsqnonneg Nonnegative least squares lu LU matrix factorization luinc Incomplete LU factorization pinv Moore-Penrose pseudoinverse of matrix qr Orthogonal-triangular decomposition rcond Matrix reciprocal condition number estimate Eigenvalues and Singular Values balance Improve accuracy of computed eigenvalues Convert complex diagonal form to real block diagonal form condeig Condition number with respect to eigenvalues eig Eigenvalues and eigenvectors eigs Eigenvalues and eigenvectors of sparse matrix gsvd Generalized singular value decomposition hess Hessenberg form of matrix poly Polynomial with specified roots polyeig Polynomial eigenvalue problem qz QZ factorization for generalized eigenvalues

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