THE WHATIS.COM WORD-OF-THE-DAY November 3, 2003 graph theory
______________________ SPONSORED BY: IBM How do you build reliable apps as fast as you need them? Start with a high-volume, highly secure foundation. Then, use the best tools to build, test, and deploy your applications. Middleware like IBM WebSphere Application Server can help. It provides both the rock-solid foundation and the tools to develop applications for it. See how. Read the white paper on WebSphere Application Server V5 today. http://www.ibm.com/websphere/news/ftwp ________________ TODAY'S WORD: graph theory See our complete definition with hyperlinks at http://whatis.techtarget.com/definition/0,,sid9_gci934747,00.html?track=NL-34 Graph theory is the study of points and lines. In particular, it involves the ways in which sets of points, called vertices, can be connected by lines or arcs, called edges. Graphs in this context differ from the more familiar coordinate plots that portray mathematical relations and functions. Graphs are classified according to their complexity, the number of edges allowed between any two vertices, and whether or not directions (for example, up or down) are assigned to edges. Various sets of rules result in specific properties that can be stated as theorems. Graph theory has proven useful in the design of integrated circuits (ICs) for computers and other electronic devices. These components, more often called chips, contain complex, layered microcircuits that can be represented as sets of points interconnected by lines or arcs. Using graph theory, engineers develop chips with maximum component density and minimum total interconnecting conductor length. This is important for optimizing processing speed and electrical efficiency. _______________________ RELATED TERMS: integrated circuit http://WhatIs.techtarget.com/definition/0,,sid9_gci213503,00.html?track=NL-34 chip http://WhatIs.techtarget.com/definition/0,,sid9_gci211780,00.html?track=NL-34 ______________________ SELECTED LINKS: Eric Weisstein discusses graph theory in his World of Mathematics. http://mathworld.wolfram.com/Graph.html The SEECS Network describes some applications of graph theory. http://www.cs.ucf.edu/newsletter/vol1/issue_two/graph-theory.html ______________________ TODAY'S TECH NEWS: NEW MIMAIL VARIANTS TAKE AIM ON SPAM BLACKLISTS The author of the Mimail worm has unleashed four variants since Friday. Though the payload is harmless, Mimail does generate a denial-of-service attack against antispam sites and could clog internal e-mail servers as it generates volumes of mail. http://SearchSecurity.techtarget.com/originalContent/0,289142,sid14_gci934773,00.html?track=NL-34 SIEBEL, IBM DELIVER ROOM SERVICE TO MARRIOTT The new software designed to help Marriott manage bookings will eventually roll out to others in the hospitality industry as part of Siebel 7.7. http://SearchCRM.techtarget.com/originalContent/0,289142,sid11_gci934772,00.html?track=NL-34 WIRELESS LANS: IS MORE SPEED NEEDED? Products that boost the speed of wireless LANs are starting to hit the market, but experts question whether enterprises really need them. http://SearchMobileComputing.techtarget.com/originalContent/0,289142,sid40_gci934653,00.html?track=NL-34 >> Catch up on all the latest IT news at http://searchtechtarget.techtarget.com?track=NL-34 ______________________ SECRET WORD-OF-THE-DAY | What is IT? This "constellation" of 24 well-spaced satellites orbits the Earth and make it possible for people with ground receivers to pinpoint their geographic location. >> See if you're right! http://searchmobilecomputing.techtarget.com/sDefinition/0,,sid40_gci213986,00.html?track=NL-34 _____________________ LEARN IT IN 10 EASY STEPS | Defeating Spam in the Enterprise Here's how it works: We give you a little background about who is spamming (and why) and provide you with information about what you can do to defend yourself against the onslaught. We also give you a glossary to look up spam-related terms, some outside reading, and a self-assessment quiz. You spend as much (or as little)time as you like moving through the ten steps and exploring the content. http://whatis.techtarget.com/definition/0,,sid9_gci931780,00.html?track=NL-34 _____________________ ALL OUR WORDS-TO-GO For your convenience, we've gathered links to all our subject-specific glossaries. If you like to learn by definition, we think you're going to love Words-to-Go. >> Click here http://whatis.techtarget.com/definition/0,,sid9_gci934240,00.html?track=NL-34 ______________________________ RECENT ADDITIONS AND UPDATES [1] UHDV http://whatis.techtarget.com/definition/0,,sid9_gci932318,00.html?track=NL-34 [2] false positive http://searchcio.techtarget.com/sDefinition/0,,sid19_gci932649,00.html?track=NL-34 [3] domain controller http://searchWin2000.techtarget.com/sDefinition/0,,sid1_gci283996,00.html?track=NL-34 [4] trinary http://whatis.techtarget.com/definition/0,,sid9_gci931627,00.html?track=NL-34 [5] WYSIWYG http://whatis.techtarget.com/definition/0,,sid9_gci213392,00.html?track=NL-34 ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: MARGARET ROUSE, Site Editor ([EMAIL PROTECTED]) IVY WIGMORE, Consulting Editor ([EMAIL PROTECTED]) LOWELL THING, Consulting Editor and Founder ([EMAIL PROTECTED]) GABRIELLE DERUSSY, Advertising ([EMAIL PROTECTED]) ::::::::::::::::::::: ABOUT THIS NEWSLETTER :::::::::::::::::::::: This newsletter is published by TechTarget, the most targeted IT media. http://www.techtarget.com?track=NL-34 Copyright 2003 TechTarget. 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