WorldCat Identities

Powers, David L.

Overview
Works: 23 works in 102 publications in 2 languages and 3,038 library holdings
Genres: Textbooks 
Classifications: QA379, 515.353
Publication Timeline
Key
Publications about  David L Powers Publications about David L Powers
Publications by  David L Powers Publications by David L Powers
Most widely held works by David L Powers
Boundary value problems and partial differential equations by David L Powers ( )
61 editions published between 1972 and 2010 in 3 languages and held by 2,471 WorldCat member libraries worldwide
This student solutions manual accompanies the text, Boundary Value Problems and Partial Differential Equations, 5e. The SSM is available in print via PDF or electronically, and provides the student with the detailed solutions of the odd-numbered problems contained€throughout the book. Provides students with exercises that skillfully illustrate the techniques used in the text to solve science and engineering problemsNearly 900 exercises ranging in difficulty from basic drills to advanced problem-solving exercisesMany exercises based on current engineering applications
Zero-symmetric graphs : trivalent graphical regular representations of groups by H. S. M Coxeter ( Book )
12 editions published in 1981 in English and Undetermined and held by 307 WorldCat member libraries worldwide
Elementary differential equations with boundary value problems by David L Powers ( Book )
7 editions published between 1985 and 1987 in English and held by 199 WorldCat member libraries worldwide
Student Solutions Manual, Boundary Value Problems and Partial Differential Equations by David L Powers ( )
2 editions published between 2005 and 2009 in English and held by 24 WorldCat member libraries worldwide
Student Solutions Manual, Boundary Value Problems
Student's solutions manual, to accompany Boundary value problems, sixth edition by David L Powers ( )
1 edition published in 2010 in English and held by 8 WorldCat member libraries worldwide
Highway investment analysis package volume II, technical manual by Richard D Juster ( Book )
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
Highway investment analysis package volume III, computer user's guide by Richard D Juster ( Book )
1 edition published in 1981 in English and held by 5 WorldCat member libraries worldwide
Instructor's manual for boundary value problems by David L Powers ( Book )
2 editions published in 1979 in English and held by 3 WorldCat member libraries worldwide
Boundary value problems by David L Powers ( Book )
1 edition published in 1979 in English and held by 2 WorldCat member libraries worldwide
Student's partial solutions manual to accompany Elementary differential equations by David L Powers ( Book )
1 edition published in 1987 in English and held by 2 WorldCat member libraries worldwide
The Eastern Washington intellectual property institute : cutting edge updates, opportunities, and issues ( Book )
1 edition published in 2008 in English and held by 1 WorldCat member library worldwide
American nation by David L Powers ( Book )
1 edition published in 2003 in English and held by 1 WorldCat member library worldwide
Boundary value problems by David L Powers ( Book )
1 edition published in 1973 in English and held by 1 WorldCat member library worldwide
Graph Partitioning by Eigenvectors ( Book )
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
Let A be the adjacency matrix of a connected graph G. If z is a column vector, we say that a vertex of G is positive, nonnegative, null, etc. if the corresponding entry of z has that property. For z such that Az> or = alpha z, we bound the number of components in the subgraph induced by positive vertices. For eigenvectors z having a null element, we bound the number of components in the graph induced by non-null vertices. Finally, bounds are established for the number of null elements in an eigenvector, for the multiplicity of an eigenvalue and for the magnitudes of the second and last eignevalues of a general or a bipartite graph
Pivoted plane pad bearings : a variational solution by A. Z Szeri ( Book )
1 edition published in 1969 in English and held by 1 WorldCat member library worldwide
Instructors manual for [D[D[D[D[D[D[D[D[D[D[D[D[D's manual for boundary value problems by David L Powers ( Book )
1 edition published in 1979 in English and held by 1 WorldCat member library worldwide
Eigenvectors of Graphs ( Book )
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
Let z be an eigenvector of the adjacency matrix A of a connected graph G. Say a vertix is positive, nonnegative, zero, etc. if the same is true of the corresponding element of z. If z is an eigenvector for the second largest eigenvalue of A, it is known that the nonnegative vertices of G form a connected subgraph. This separation of vertices according to sign provides the basis for studying the structure of G as revealed by its eigenvectors, inequalities on the number of edges joining positive and negative vertices, bounds on the number of zero vertices, bounds on multiplicities and some description of the variability of the elements of z. The rows of an eigenmatrix provide a mapping of the vertices of G into m-dimensional euclidean space. Some graphs thus 'draw themselves'. This phenomenon is especially interesting if the graph is the skeleton of a polytope
Eigenvectors of Distance-Regular Graphs ( Book )
1 edition published in 1987 in English and held by 1 WorldCat member library worldwide
The objective of this work is to find properties of a distance-regular graph G that are expressed in the eigenvectors of its adjacency matrix. The approach is to consider the rows of a matrix of orthogonal eigencolumns as (coordinates of) points in euclidean space, each one corresponding to a vertex of G. For the second eigenvalue, the symmetry group of the points is isomorphic to the automorphism group of G. Adjacency of vertices is related to linear dependence, linear independence and proximity of points. Relative position of points studied by way of the polytope that is their convex hull. Several families of examples are included
The Petersen Polytopes ( Book )
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
A facet of a convex polytope C is the intersection of C with a supporting hyperplane. Since the extreme points (extrema) of a facet F of C are just the extreme of C that lie in F, a facet is completely described by the list of its extrema. In the following we may not distinguish among: (a) a polytope; (b) the set of extrema of the polytope; (c) the set of coordinate vectors of the extrema of the polytope; (d) the set of vertices of the graph G corresponding to the rows of Z that are coordinate vectors of the extrema of the polytope. If EZ is singular, then W = conv (w sub i : i an element of U) is not a facet
Boundary value prob- lems by David L Powers ( Book )
1 edition published in 1979 in Undetermined and held by 1 WorldCat member library worldwide
 
moreShow More Titles
fewerShow Fewer Titles
Audience Level
0
Audience Level
1
  Kids General Special  
Audience level: 0.62 (from 0.00 for Eigenvecto ... to 0.97 for Highway in ...)
Alternative Names
Powers, D.
Powers, D. (David L.)
Powers, David L.
Languages
English (94)
Spanish (1)
Covers