'\subsetneq' - Tex命令

The \subsetneq command is a Tex command used to represent a proper subset relationship between two sets. It is a mathematical symbol that indicates that one set is a subset of another set, but not equal to it. This command is often used in mathematical notations and equations.

Syntax

The syntax for using the \subsetneq command in Tex is as follows:

A \subsetneq B

Here, A and B represent the two sets between which the proper subset relationship is being described. The symbol \subsetneq is used between the two sets to indicate the relationship.

Example

Let's consider an example to understand the usage of the \subsetneq command:

$A = \{1,2,3\}$

$B = \{1,2,3,4\}$

If $A \subsetneq B$, then $A$ is a proper subset of $B$.

In the above example, we have two sets A and B, where A is the set {1, 2, 3} and B is the set {1, 2, 3, 4}. By using the \subsetneq command, we can denote that A is a proper subset of B.

Output

The output will be rendered as:

A = {1,2,3}

B = {1,2,3,4}

If A ⊂ B, then A is a proper subset of B.

Here, the \subsetneq command is displayed as the proper subset symbol ⊂ in the rendered output.

Using the \subsetneq command helps programmers and mathematicians express the proper subset relationship in a clear and concise manner in mathematical notations and equations. It enhances readability and understanding of mathematical concepts in programming or academic writing.