Announcements

The Wolfram Worldwide Web Store has been redesigned with a new time-saving, easy-to-navigate interface. Starting within the next month international customers will be able to purchase directly from participating resellers through the web store, which offers the convenience of using a local currency for payment and a local distributor for shipment...
http://store.wolfram.com

Register now for the 2001 Mathematica Developer Conference, to be held October 11-13 in Champaign, Illinois. Abstract submissions are due by May 31. Topics of particular interest this year include webMathematica, MathML, XML, and J/Link...
http://www.wolfram.com/news/events/devconf2001

Wolfram Education Group offers certified Mathematica training to individuals and corporations. July classes in Boston, Atlanta, Seattle, and Los Angeles are now open for registration. Online registration and additional information about Wolfram Education Group are available...
http://www.wolfram.com/services/training/education

Global Optimization 4.0, an updated application package from Loehle Enterprises, adds equality constraints, nonlinear regression, maximum likelihood estimation, and tabu search to its collection of functions for global nonlinear optimization...
http://www.wolfram.com/products/applications/globalopt

Operations Research 2.0, a Mathematica application package by SoftAS GmbH, now includes tools for solving problems in quadratic programming and combinatorial heuristics as well as in linear optimization, shortest path tasks, and combinatorial optimization...
http://www.wolfram.com/products/applications/operationsresearch

The Industrial Optimization application package by Visual Analysis AG is designed to solve a wide range of optimization problems and is now available at a significantly reduced commercial price...
http://www.wolfram.com/products/applications/optimization

Did you know...?

...you can significantly reduce the amount of memory used and time taken to perform a calculation in Mathematica by storing only as many references to each expression as needed. When you clear an expression, such as Clear[x], where x = {1, 2, 3}, the memory used to store the reference to the expression {1, 2, 3} is released. If {1, 2, 3} occurs in separate inputs, calling Share[ ] will cause Mathematica to throw out all but one copy and set up pointers from the deleted entries to the remaining copy...
http://documents.wolfram.com/v4/RefGuide/Share.html

...the Mathematica 4.1 compiler and pattern matcher includes new optimizations that speed up repetitive operations and calculations involving large arrays and improve the performance for many other pattern-matching operations. Performance in many cases is several thousand times greater than in previous versions...
http://www.wolfram.com/products/mathematica/newin41/parser.html

In the news...

Mathematica for Mac OS X "has the makings of a remarkable environment for scientific computing," says its chief architect. It will be commercially available this summer when OS X becomes the standard operating system on new Macintosh machines...
http://www.wolfram.com/news/macosxrelease.html

Mathematica 4.1 has recently been reviewed in eWeek, Desktop Engineering, and IT Week publications...
http://www.zdnet.com/eweek/stories/general/0,11011,2693225,00.html
http://www.deskeng.com/articles/01/april/software_math
http://www1.zdnet.co.uk/reviews/rstories/0%2C3040%2Ce7109183%2C00.html