Each element in the collection is unique and will not be repeated. This data structure is mainly used for mathematical and logical operations, such as intersection, union and difference sets.
In computer science, a set is usually represented by braces or lowercase letters followed by a colon and a number. Numbers represent the number of elements in the collection, and letters represent the types of elements. For example, the integer set can be expressed as: {3, 4, 5, 6}.
In mathematics, sets are usually represented by capital letters (such as a, b, c, etc. ). Each set can contain any number of elements, including zero or more. For example, the set A = {1, 2,3,4,5} is a set containing five elements.
Sets can also be represented by mathematical symbols. For example, the sign "∨" represents all the elements of two sets, the sign "∨" represents the * * * same elements of two sets, and the sign "?"is the difference sign. It means deleting all the elements in one set from another, and so on.
Make words and sentences:
In math class, the teacher explained how to solve the intersection and union of sets.
At the concert, the sounds of various musical instruments formed a wonderful collection.
The stars in the night sky form a huge constellation.
4. Set can be used to represent a series of things with similar characteristics.
In the library, all the books constitute a huge collection.
6. Set theory is an important branch of mathematics, which studies the properties and operations of sets.
7. All animal species can be regarded as a collection of biodiversity.
At the art exhibition, all the paintings formed an art collection.
9. A set can be infinite or finite.
10, in the supermarket, all the goods constitute a wide variety of collections.
1 1. In the field of mathematics, set theory is a branch of studying sets, their properties and operations.
12. The elements in the set can be of any type, such as numbers, words, concepts, etc.
13. In computer science, sets are usually used to design data structures and algorithms.
14. The properties of sets include empty sets, finite sets and infinite sets.
15. Knowledge of set theory is needed to describe the relations and operations between sets.