00:00Our new topic is sets, folks.
00:02What is a set?
00:03What are the types?
00:04What are the concepts?
00:05How can it be expressed?
00:06How do we recognize them?
00:07Let's try to take a look.
00:09A set is a well-defined list of objects, folks.
00:27The objects that make up the set are...
00:39What are we saying, guys?
00:41We call them the elements of our cluster.
00:44These are called the elements of a set.
00:51And also, how are sets symbolized, friends?
00:59They are represented by capital letters such as A, B, C.
01:15Let's take an element X, folks.
01:19Let's say X is an element of set A.
01:28So be it.
01:31This statement, friends...
01:36X is an element, expressed and represented as A.
01:47What if our X is not a member of set A?
01:51Let's say it's not an element of A.
01:52Set A is not an element of set A.
02:02Let it not be an element of set A.
02:05This statement, however...
02:06X is not an element; it is expressed and shown as A.
02:20Let's add some specifics, guys.
02:23Let's get to know our cluster better.
02:24You can't write an element in a set more than once, folks.
02:27An element cannot be written more than once in a set.
02:44And also the rearrangement of elements in your set...
03:00The set cannot be changed.
03:11And friends, I should also mention this.
03:14The number of elements in set A...
03:27How do we write, guys?
03:29The letter S is represented by A within planfez.
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