What does the type of symbol include

The symbols included are ,is contained in the symbol: a is included in b - then a is a subset of b or equal to b.

is the inclusion symbol: a contains b - then b is a subset of a or equal to a.

True contains: A is true to b - then a is a true subset of b.

If b=, then a= or {2} or empty set.

Definitions

If any element of set A is an element of set B (any a a then a b), then set A is called a subset of set B, denoted as a b or b a, and is read as "set A contains set B" or set B contains Set A".

i.e.: a a has a b, then a b.

True subset: If set A is a subset of B, and A ≠ B, i.e., at least one element in B does not belong to A, then A is a true subset of B, which can be denoted as: A B.

Symbolic language: if a a, both have a b, and x b makes x a, then a b.

If set A is contained in set B, but there is element X that belongs to B, and X does not belong to A, we call Set A a a proper subset of Set B, denoted as . Represents the relationship between two sets.

is contained in the symbol: a is included in b - then a is a subset of b or equal to b.

is the inclusion symbol: a contains b - then b is a subset of a or equal to a.

True contains: A is true to be included in b - then a is a true subset of b, if b = then a = or or empty set.

Operator Symbols:For example, the plus sign (+), the minus sign ( ), the multiplication sign ( or ·), the division sign ( or ), the union ( ) intersection ( ) of two sets ( ) the root sign ( logarithm (log, lg, ln, lb), ratio ( :) absolute value sign | |Differentiation (D), integration ( ), closed surface (curve), integration ( ), etc.

There are two commonly used symbols containing " in Chinese, which are " " " and " ".

It is generally used to indicate the relationship between the size of two quantities, for example, "a b" means that a is greater than b.

Indicates a subset symbol, which is generally used to indicate that one set is a subset of another set, such as "a b" indicates that a is a subset of b. In set theory, a subset is an important relationship that can be used to describe the inclusion relationship between sets.

There are four main types of parentheses, including curly braces "", middle brackets "[ small brackets" ( and less commonly used brackets "In addition, there are hexagonal brackets", angle brackets "<> and square brackets" [].

Parentheses

1. There are many ways to interpret the preceding words, and any aspect of the problem can be analysed and clarified. For example, fish can only swim in the sea (i.e., water), and birds can only fly in the sky (i.e., the atmosphere). (Zhang Bingyuan, "The Association of Birds Flying and Fish Jumping").

2. Supplementary explanation of the relevant content: The Wuhan (Han) Guangzhou (Zhou) section of the Beijing-Guangzhou Railway is under intense construction ......New progress has also been made. ("Bright**.")

3. The parenthetical order is bracketed in parentheses, and there are many forms such as (1) (2) (3), (a) (b) (c) 2) 3), which are usually used in pairs, sometimes only after the brackets. For example: there are three conditions for thought:

1) Facts, (2) Psychology, (3) Ethics; There are also three conditions for speech: (1) sound, (2) the sign of sound, which is the word, and (3) the relationship between sound and sound, which is grammar. ("Chen Wangdao's Collected Essays").

4. Mathematical usage.

Brackets are symbols used to specify the order of operations.

Square brackets "", also known as square brackets. It is used to indicate gaps or corrections in the text, the International Phonetic Alphabet, references, etc.

1. It is used to fill in the gaps or make mistakes, stubble, spicy, and non-toxic. (Herbal Prescription Book, Tang Dynasty Manuscript).

Second, it is used to mark the International Phonetic Alphabet, which mostly uses the lowercase form of Latin alphabet printing, and some are slightly modified or with additional symbols on the shape, and square brackets are added to indicate that it is a phonetic alphabet, not a letter. For example, there are three ......factors that can be used as a mediator in Beijing dialect: [i], [u], and [y].(Luo Changpei, Wang Jun, "Outline of General Phonetics").

3. In the dictionary, it is used for the phonetic after the prefix, Pei [pèi] "Guangyun" Pu Wei Che, go to the team, and].

Fourth, it is used to indicate the etymology in the dictionary.

Hexagonal parentheses

First, add words in the quotation, so that the meaning of the front and back is coherent, and such as "letter", in ancient times only referred to the person who sent the letter, the modern letter was called "book" in ancient times, "Shishuo Xinyu": "Russian and Xie Xuanhuai wrote to the letter, Xie An read the book, silently", "the difference between "letter" and "book" is very clear. (Lü Shuxiang, The Evolution of Language).

2. For official numbers, documents of the Office of the State Council, No. 81 of 1993.

3. In the footnotes, the words to be annotated are indicated, looking for the ancient eight feet for seeking. (Annotation of Wang Anshi's "Ascending the Flying Peak").

4. Indicate the nationality of the author or the dynasty to which he belongs, "Outline of World History" by Ingh Joe Wells, "Lincoln's Biography" by Carl Sandburg.

5. In terms of mass organization, the organization of the soldiers' associations of the army and the organization of the local masses of workers and peasants are neglected. Note 1 See Note 5 of the Struggle in Jinggangshan (Selected Works, 2nd Edition, Vol. 1, p. 1).

Others, the square bracket "【] is often used to indicate the entry of the reference book.

Both the form and meaning of the symbol are general (universal). There is no intrinsic, natural and necessary connection (conventionality) between the form and meaning of the symbol.

Definition of Symbol:

Symbols are the external manifestations or material carriers of information, and are one of the indispensable basic elements for the expression and dissemination of information. Symbols are an important tool for information dissemination, and in the West, after systematic and in-depth research, an independent discipline --- semiotics has finally been formed. The theoretical origins of Western semiotics can be traced back to two aspects.

The first aspect is that of the American philosopher Peirce, who gave a very clear definition of symbols, and classified and summarized them, giving semiotics an independent academic status. The second aspect is the Swiss linguist Saussure, who is known as the father of semiotics for his symbolic integration of vast linguistic phenomena.

Symbol Properties:

Symbols themselves have many characteristics, mainly sound, accidental, hierarchical, and unique, and their uniqueness. It mainly includes linearity, arbitrariness, invariance, variability, and generativity.

Symbols are a tool for communication between people, and they are one of the most important communication mediums in human society. People use language symbols to express ideas, convey feelings, and communicate knowledge. In a philosophical sense, ideas are expressed through language.

Thinking is the core of language, and symbols are the shell of language.

1. Blank name.

2. Miscellaneous symbols.

3. Printed symbols.

o ò4, Tibetan bai.

5. Currency symbols.

6. Khmer.

A symbol is a figure, mark, or character that is used to represent something or meaning. The common symbols of blind socks are as follows:

1.Mathematical symbols: e.g. addition, subtraction, multiplication and division, parentheses, equals, etc.

2.Physical symbols: such as unit of measurement symbols, symbols used in mechanics and electricity, and so on.

3.Chemical symbols: e.g. element symbols, compound names used in reactions, etc.

4.Symbols: e.g. notes, rhythm markers, etc. used in musical scores.

5.Map symbols: For example, various geographical element signs on geographical maps, such as land, rivers, mountains, etc.

6.Internet cultural symbols: such as various emojis used in memes, abbreviations of words used in specific vocabulary on the Internet, etc.

In addition, there may be other types of special symbols in different fields and cultural contexts, but the above list is the more common basic type.

The symbols included are ,is contained in the symbol: a is included in b - then a is a subset of b or equal to b.

is the inclusion symbol: a contains b - then b is a subset of a or equal to a.

True contains: A is true to b - then a is a true subset of b, if b = then a = or {2} or empty set.

Definitions

If any of the elements of set A are elements of set B (any a a then a b), then set A is called a subset of set B, denoted as a b or b a, and is read as "Set A is contained in Set B" or "Set B contains Set A".

i.e.: a a has a b, then a b.

Brother Makoji Tan:

If the set A is a subset of B, and A ≠ B, i.e., at least one element of B is not part of A, then A is a true subset of B, so that the conversation can be recorded as: A B.

Symbolic language: if a a, both have a b, and x b makes x a, then a b.

Rare and beautiful symbols:

1. Love symbol:

2. Note symbols:

3. Cultural symbols: swastika.

4. Office symbol:

5. Constellation symbols:

6. Arrow symbol:

7. Graphic symbols:

9. Triangle symbol:

Rare and beautiful symbols:

1. Love symbol:

2. Note symbols:

3. Cultural symbols: swastika.

4. Office symbol:

5. Constellation symbols:

6. Arrow symbol:

7. Graphic symbols:

9. Triangle symbol: