What is it? Where is it commonly used?

It is a single quotation mark, which is generally used in a sentence, and when there are double quotation marks in the sentence, you can quote a single quotation mark when you want to quote the description again.

is an infinity symbol. infinity or infinity, the mathematical symbol is . It comes from the Latin word "infinitas", which means "without borders".

It has different concepts in theology, philosophy, mathematics, and everyday life. The term is often used without a more technical definition. In mathematics, there are two equations of infinite symbols that are occasionally used, namely:

∞+1，∞=∞×1。A positive value represents an infinite number of formulas, without a specific number, but a positive infinity means a value that is greater than any one number. The symbol is +, and the symbol for negative infinity is -.

This belongs to a special quotation mark, indicating the emphasis on the matter, the meaning of needing special attention, and is generally used in the description of people or events in the article.

This is generally used in conversations, that is, to frame what is being said in this way.

It is a single quotation mark that is used in the word.

Apostrophe. Usage and function.

1.When quotation marks are still used inside quotation marks, double quotation marks are used in the outer layer and single quotation marks are used in the inner layer.

Examples:Xiao Ming raised his hand and asked"Teacher,'Not suitable for children'What is the meaning? "

2.Used for major pinyin input methods, soundproof notes.

Example: Maybe, that's it'The poetry of life' !

The symbol is full-width quotation marks in English, and it is a single quotation mark.

Single quotation marks refer to the parts or words that are generally used for direct quotation, "the symbol is English full-width quotation marks are single quotation marks, when quotation marks are used inside, the outer layer is double-quoted, and the inner layer is single-quoted, the national standard "Punctuation Usage" stipulates that quotation marks indicate "words directly quoted in the text", so as to distinguish these words from the author's own words. If the index contains references, it is necessary to use the method of double double and single inside.

Usage and function.

1. It is used for major pinyin input methods and soundproof notes.

2. It is used to highlight the structure of the article, or to express special content.

Although the form of quotation marks in vertical text is different from that in horizontal lines, the usage is still double on the outside and single on the inside. The newspapers and periodicals with grinding and selling just reversed the order and turned it into an outer single and an inner double. This is something that should be noted. <>

It's braces. Braces, introduced in 1593 by the French mathematician François Viète (1540-1603), were used worldwide after the 18th century.

This symbol represents a purpose in a wide range through instructions and formulas. English name: brace, also known as curly braces.

Applications

When 1 is outside the middle parentheses, it indicates the next level of operations outside the middle brackets.

2.In mathematics, it can be a symbol for a set, such as: a=.

3.In mathematics, when there is only one number in curly braces, the decimal part of the number can be described. For example: representation.

4.It is often used in computer programs to indicate the order in which programs are run.

Questions.; What is the number.

Semicolon. The name is a semicolon.

Hello, do you have any other questions? Do you mean this?

It is a single book title number, angle brackets.

1. The book title number is used to indicate the punctuation marks of the book title, article title, newspaper name, document name, opera name, song name, picture name, etc., and the book title number is divided into two book titles ("" and single book titles ( two kinds.

2. A pair of symbols used to divide the markup in an HTML document. Among them, " is represented by " " and " is represented by " ". In the Internet Online Chat System (IRC) or Multi-User Online Game (MUD), symbols used to set actions or reactions, such as the Chuckle>.

Usage 1: Book titles should be used in pairs.

2. When the book title number is still used in the book title number, the external double internal single book number cannot be placed in a grid when writing.

3. When the title of the book is used in conjunction with the title of the book, write the title of the book first and then write the title, with a spacer in the middle, and then add the title number.

4. The name of the course, topic, prize, certificate, trademark, license, organization, conference, activity, etc., which cannot be regarded as a work, shall not be used as the title number. The following are examples of misuse of book title numbers.

& is the meaning of and, and, and the English symbol is equivalent to the word and. The earliest history of the character & dates back to the 1st century AD and is a ligature. The earliest & was much like a combination of e and t, but with the development of printing technology, this symbol gradually formed its own style and detached itself from its original shadow.

Angle bracket 1, a pair of symbols used to divide tags in an HTML document. Among them, " is represented by " " and " is represented by " ". 2. Symbols used to set actions or reactions in Internet Chat (IRC) or Multi-User Network Games (MUD), such as:

3. In the email header, a pair of symbols used to divide the return address. In Chinese it is a single book title number.

1, is a single book title, such as My Father and Mother, etc.

2. Descriptors, such as 1, 2, etc.

In the language: the title of the book.

In mathematics: not equal.

…The meaning of this symbol is ellipsis.

The basic form in Chinese is six small dots (......) located on the middle lineoccupy the position of two words; Reference books and scientific literature sometimes use three small dots to occupy the space of one word.

The omission of an entire passage or line of poetry is represented by 12 small dots, which form a line of its own and occupy the position of four characters.

The ellipsis is not disassembled and moved, and the six connecting points should be arranged on the same line.

& is the meaning of and, and, and the English symbol is equivalent to the word and. The earliest history of the character & dates back to the 1st century AD and is a ligature. The earliest & was much like a combination of e and t, but with the development of printing technology, this symbol gradually formed its own style and detached itself from its original shadow.

4"The formed centimeters are centimeters, centimeters, centimeters, centimeters.

The original meaning of inch in Dutch is the thumb, and an inch is the width of an average person's thumb at the bottom of the nail. Of course, the width of a person's thumb also varies. In the 14th century, King Edward II promulgated the "Standard Legal Inches".

The rules are: the three largest grains of wheat are selected from the middle of the ears of barley and arranged in a row to a length of one inch.

乛. Indicates the negation of a proposition, and a proposition that uses this symbol is called a new proposition. If the original proposition is true, the new proposition is false, and if the original proposition is false, the new proposition is true.