tag:blogger.com,1999:blog-62980257577566023242012-02-16T04:00:45.612-08:00Azman Md Safieehttp://www.blogger.com/profile/06324176400067166131noreply@blogger.comBlogger21100tag:blogger.com,1999:blog-6298025757756602324.post-83188468960345790832007-02-02T06:48:00.000-08:002007-02-02T06:53:13.338-08:00n mathematics, any collection of defined things (elements), provided the elements are distinct and that there is a rule to decide whether an element is a member of a set. It is usually denoted by a capital letter and indicated by curly brackets {}.<br />For example, L may represent the set that consists of all the letters of the alphabet. The symbol Î stands for ‘is a member of’; thus p Î L means that p belongs to the set consisting of all letters, and 4 Ï L means that 4 does not belong to the set consisting of all letters.<br /><br />There are various types of sets. A finite set has a limited number of members, such as the letters of the alphabet; an infinite set has an unlimited number of members, such as all whole numbers; an empty or null set has no members, such as the number of people who have swum across the Atlantic Ocean, written as {} or ø; a single-element set has only one member, such as days of the week beginning with M, written as {Monday}. Equal sets have the same members; for example, if W = {days of the week} and S = {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}, it can be said that W = S. Sets with the same number of members are equivalent sets. Sets with some members in common are intersecting sets; for example, if R = {red playing cards} and F = {face cards}, then R and F share the members that are red face cards. Sets with no members in common are disjoint sets. Sets contained within others are subsets; for example, V = {vowels} is a subset of L = {letters of the alphabet}.<br /><br />Sets and their interrelationships are often illustrated by a Venn diagram. <br /><br /><br />reference:http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0006734.html<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6298025757756602324-8318846896034579083?l=mathematics4u.blogspot.com' alt='' /></div>Azman Md Safieehttp://www.blogger.com/profile/06324176400067166131noreply@blogger.com0tag:blogger.com,1999:blog-6298025757756602324.post-70331372954859809952007-02-02T06:47:00.000-08:002007-02-02T06:48:05.520-08:00<div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/6298025757756602324-7033137295485980995?l=mathematics4u.blogspot.com' alt='' /></div>Azman Md Safieehttp://www.blogger.com/profile/06324176400067166131noreply@blogger.com0