Suppose you put a book, a ballpoint, and a ruler in your bag because the bag you want to wash, then the items must be removed first.If a space has no contents, what do you say?
In this situation, if the item in question is a stationery that is in the bag, it means that there is no item in the bag because it has been removed.
The situation in such a bag is said to be empty. Thus, if A is the set of stationery that is in the bag then A is an empty set. The blank set symbol is ∅ or {}. Many empty set members are 0. {} are those that have no members.
So it can be concluded :
An empty set is a set that has no members. The blank set symbol is ∅ or {}.
Example :
Given that A = {x | x is a number less than 1}. Is A an empty set?
Think analytically and explain in your own language!
To be clear, consider the example below:
If H is the set of names of RI presidents supplied with the letter P, state it with set notation!Answer:
Because the names of the Indonesian presidents are Soekarno, B.J. Habibie, Abdurahman Wahid, Megawati Soekarno Putri, Susilo Bambang Yudhoyono, and Joko Widodo then there is no president's name starting with the letter P. So, H is an empty set, written with H = ∅ or H = {}.
Thus this article. Sorry if there is a mistake.
Final words wassalamualaikum wr. wb.
Reference:
- The book Berlogika with mathematics (Umi Salamah)
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