The meaning and representation of a set, and the meaning and representation of a set

A collection is a collective of concrete or abstract objects with a specific nature, which are called elements of the collection. For example, the collection of all Chinese, its element is every Chinese. We usually use capital letters such as a, b, s, t,..

Represents a set with lowercase letters such as a, b, x, y, ,..An element that represents a collection.

There are two ways to represent this.

Enumeration is the way to enumerate the elements of a set one by one. For example, the three primary colors in optics can be represented by ensembles; The set a, consisting of the four letters a, b, c, d, can be represented by a=, and so on.

If the set s is composed of all elements with a certain property p, the set can be represented by describing the common properties of the elements in the set: s=

A set has three properties: determinism (given a set, any element is given, and the element either belongs to or does not belong to the set, and one of the two must be in place, and no ambiguity is allowed), heterogeneity (in a set, any two elements are considered to be different, that is, each element can only appear once), and disorder (in a set, the status of each element is the same, and the elements are disordered).

A set is a collection of elements put together, for example, a set of numbers refers to a number of numbers put together, like an integer set, which refers to the set of all integers, which is often represented by "" or ellipse.

Set is a new concept involved in high school mathematics, and the basic question type is based on the introductory question type, deepening one kind of thinking, or comprehensively applying multiple kinds of thinking. Each question type is a mind-building process that will help you master it quickly!

No, because odd numbers are integers, they should be reduced to a smaller range.

Meaning: A collection is the totality of things that have a certain nature.

Representation: Collections are often represented by uppercase Latin letters, such as: a, b, c...The elements in the set are represented by lowercase Latin letters, such as:

a,b,c…The Latin alphabet is just the name of the equivalent of a collection and has no real meaning. The method of assigning the Latin alphabet to a set is expressed by an equation, e.g. in the form of a=.

The left side of the equal sign is a capital Latin letter, and the right side is surrounded by curly braces, and inside the parentheses are mathematical elements of some common property.

Commonly used are the enumeration method and the description method.

The meaning of the set is:1. Many scattered people or things get together: the whole school is already preparing in the playground.

2. Make a set; Gathering: A variety of materials, to be analyzed.

3. Mathematically refers to the totality of a number of things that have a common traus. For example, all integers become a set of integers, and all the workers of a factory become a set of all the workers of that factory. Abbreviated set.

synonyms: converge, rendezvous, convene.

Example sentence: 1. On Monday afternoon, all the students gathered on the playground to participate in the group dance competition.

2. We agreed to meet at that intersection in ten minutes.

3. Gather the whole school, please check the number of people in each class.

4. In the broadcast, everyone is asked to gather at the Huaibian playground immediately!

5. The teacher calls for the students to gather on the playground.

6. The students agreed to gather in front of the Children's Palace at 10 o'clock in the morning on Sunday.

7. Unless there are special circumstances, you must gather at the school on time after 8 o'clock the day after tomorrow.

8. Tomorrow, you will gather at the dock on time, and you will not miss the appointment!

9. We arrived at the meeting point on time according to the regulations of the school.

10. When making more decisions, we need to work together, so that we can fully gather everyone's thoughts and make decisions more accurately.

11. Assemble a team to run towards the sun.

12. He who is not on my side is against me; Those who do not assemble with me are scattered.

Set is a polysemous word, which is described as follows:

1. Mathematical concepts: Sets, abbreviated as sets, are a basic concept in mathematics and the main research object of set theory. The basic theory of set theory was created in the 19th century, and the simplest way to say about a set is the definition in naïve set theory (the most primitive set theory), that is, a set is "a definite set of things", and the "things" in a set are called elements.

A modern set is generally defined as a whole made up of one or more definite elements.

2.Computer science terminology: In computer science, a set is a combination of a variable number of data items (or possibly 0) that may share certain characteristics and need to be manipulated together in a certain way of operation.

Lists (or arrays) are not usually considered collections because of their fixed size, but in fact they are often used as some form of collection in implementations. Types of sets include lists, sets, multisets, trees, and graphs. The enumeration type can be either a list or a set.

3.Chinese words: gather, scattered people or things gathered together, make gathering, emergency gathering.

Refers to the totality of a number of things that have common properties. For example, all natural numbers become a set of natural numbers, and all the personnel of a unit become a set of all the personnel of the unit.

4.Micro-course course: With the help of intuitive diagrams, students can perceive the generation process of set diagrams, preliminarily cultivate students' modeling awareness and ability, and infiltrate the awareness of solving problems in a variety of methods.