In vector calculus, del is a vector differential operator represented by the nabla symbol, ∇.

In the three-dimensional Cartesian coordinate system R³ with coordinates (x, y, z), del can be defined as

$\backslash nabla\; =\; \backslash begin\{pmatrix\}$

{\partial \over \partial x}, {\partial \over \partial y}, {\partial \over \partial z} \end{pmatrix}

or alternatively,

More on [ Del ]

Wiley: All New Mathematics & Statistics Titles

Loss Models: From Data to Decisions, Solutions Manual, 3rd Edition
Stuart A. Klugman, Harry H. Panjer, Gordon E. Willmot Mon, 25 Aug 2008 04:00:00 -0000
  Loss Models: From Data to Decisions, Third Edition has been thoroughly revised and updated to include new material related to Exam C (old Exam 4) of the Society of Actuaries' accreditation program. Terms are defined when they are first introduced, and a solid background in mathematical sciences (including calculus) is recommended. Companion software, datasets, and over 400 sample test exercises, Read More...
Solved Problems in Geostatistics
Oy Leuangthong, K. Daniel Khan, Clayton V. Deutsch Mon, 25 Aug 2008 04:00:00 -0000
  Solved Problems in Geostatistics brings together exercises and projects that demonstrate key principles and build strong bridges between theory and practice. Each chapter focuses on a comprehensive topic with examples and problems for a technologically evolving audience. Problems in each chapter are classified as analytical, numerical, or practical; exercises are identified as foundational, advanced, Read More...
Practical Text Mining with Perl
Roger Bilisoly Mon, 18 Aug 2008 04:00:00 -0000
  Provides readers with the methods, algorithms, and means to perform text mining tasks This book is devoted to the fundamentals of text mining using Perl, an open-source programming tool that is freely available via the Internet (www.perl.org). It covers mining ideas from several perspectives--statistics, data mining, linguistics, and information retrieval--and provides readers with the means to successfully complete text mining tasks on their Read More...
Loss Models: From Data to Decisions, 3rd Edition Set
Stuart A. Klugman, Harry H. Panjer, Gordon E. Willmot Fri, 15 Aug 2008 04:00:00 -0000
This set contains: 9780470187814 Loss Models: From Data to Decisions, 3rd Edition and the 9780470385715 3rd Edition Solutions Manual by Stuart A. Klugman, Harry H. Panjer, Gordon E. Willmot. Read More...
An Introduction to Linear Programming and Game Theory, 3rd Edition
Paul R. Thie, Gerard E. Keough Mon, 11 Aug 2008 04:00:00 -0000
  Introduction to Linear Programming and Game Theory, Third Edition includes various additions as well as improvements that have been developed over the last decade, and the most significant addition to the text involves technology. It features an introduction, discussion, and utilization of Solver, a spreadsheet software package that solves mathematical programming problems. PRT Simplex, a computer application for learning the simplex method, Read More...
The Probabilistic Method, 3rd Edition
Noga Alon, Joel H. Spencer Mon, 11 Aug 2008 04:00:00 -0000
  This Third Edition of The Probabilistic Method reflects the most recent developments in the field while maintaining the standard of excellence that established this book as the leading reference on probabilistic methods in combinatorics. Maintaining its clear writing style, illustrative examples, and practical exercises, this new edition emphasizes methodology, enabling readers to use probabilistic techniques for solving problems in such fields Read More...

Subscribe to Math RSS feed