https://en.wikipedia.org/wiki/Glossary_of_mathematical_symbols
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for

https://www.mathsisfun.com/algebra/symbols.html
not equal to. π ≠ 2. < ≤. less than, less than or equal to. 2 < 3. > ≥. greater than, greater than or equal to. 5 > 1. ⇒.

https://science.howstuffworks.com/math-concepts/basic-math-symbols.htm
The multiplication symbol (×) signifies multiplying something by something else — that is, finding the product of two numbers or, to put it another way, adding a number to itself a certain number of times. Let's make that clear with an example: 6 × 3 = 18 means you're adding three 6s together, resulting in a product of 18. Since the formal multiplication symbol (×) is not common on

https://www.mathsisfun.com/symbols.html
Symbols save time and space when writing. Here are the most common mathematical symbols

https://simple.wikipedia.org/wiki/List_of_mathematical_symbols
The list below has some of the most common symbols in mathematics. However, these symbols can have other meanings in different contexts other than math. If x=y, x and y represent the same value or thing. If x≈y, x and y are almost equal. If x≠y, x and y do not represent the same value or thing. If x<y, x is less than y.

https://math.stackexchange.com/questions/864606/difference-between-%E2%89%88-%E2%89%83-and-%E2%89%85
$\approx$ is used mostly for the approximate (read: calculated) value of a mathematical expression like $\pi \approx 3.14$ In LaTeX it is coded as \approx. $\cong$ is used to show a congruency between two mathematical expressions, which could be geometrical, topological, and when using modulo arithmetic you can get different numbers that are congruent, e.g., $5 \text{ mod } 3 \cong 11 \text

https://en.wikipedia.org/wiki/Plus_and_minus_signs
The plus sign (+) and the minus sign (−) are mathematical symbols used to denote positive and negative functions, respectively. In addition, + represents the operation of addition, which results in a sum, while − represents subtraction, resulting in a difference. Their use has been extended to many other meanings, more or less analogous. Plus and minus are Latin terms meaning "more" and

https://en.wikipedia.org/wiki/List_of_logic_symbols
In logic, a set of symbols is commonly used to express logical representation. The following table lists many common symbols, together with their name, how they should be read out loud, and the related field of mathematics.Additionally, the subsequent columns contains an informal explanation, a short example, the Unicode location, the name for use in HTML documents, and the LaTeX symbol.

https://mathworld.wolfram.com/Parenthesis.html
One of the symbols ( or ) used to denote grouping. Parentheses have a great many specialized meanings in mathematics. A few of these are described below. 1. Parentheses are used in mathematical expressions to denote modifications to normal order of operations (precedence rules). In an expression like (3+5)×7, the part of the expression within the parentheses, (3+5)=8, is evaluated first, and

https://emojipedia.org/check-mark
A thick check mark / tick displayed on some platforms in a handwritten style. Generally displayed in black. Commonly used in lists to signify completed tasks or verification of a statement of fact. Previously shown in red on Samsung and green on Google and Microsoft . Note: this emoji is not supported in Twitter / X names, to minimize confusion

https://www.overleaf.com/learn/latex/List_of_Greek_letters_and_math_symbols
The great, big list of LaTeX symbols. Mathematical expressions. Brackets and Parentheses. Integrals, sums and limits. Mathematical fonts. Spacing in math mode. Aligning equations. An online LaTeX editor that's easy to use. No installation, real-time collaboration, version control, hundreds of LaTeX templates, and more.

https://wumbo.net/symbols/approximately/
The approximately symbol (≈) is used in math to indicate that two expressions are approximately equal to each other. Typically, the symbol is used in an expression like this: In plain language, this means that the constant π (pi) is approximately equal to the value 3.14. In reality, the value of the constant π is irrational and continues

https://en.wikipedia.org/wiki/Mathematical_operators_and_symbols_in_Unicode
The Unicode Standard encodes almost all standard characters used in mathematics. Unicode Technical Report #25 provides comprehensive information about the character repertoire, their properties, and guidelines for implementation. Mathematical operators and symbols are in multiple Unicode blocks.Some of these blocks are dedicated to, or primarily contain, mathematical characters while others

https://www.mathematics-monster.com/symbols/Tilde-Operator.html
Here, the tilde indicates that 3.14 is an approximation of π. To wrap up, the ∼ symbol is versatile and widely adopted in various mathematical contexts. Its usage mainly revolves around the concepts of similarity, equivalence, or approximation. It's an efficient way to convey these concepts without the need for verbose explanations.

https://wumbo.net/symbols/minus/
The minus symbol is used in math to represent subtraction. Typically, the symbol is used in an expression like this: In plain language, this expression represents 6 minus 5. Note, the code point of this character is different from the hyphen symbol (-) on the keyboard even though they are usually used to mean the same thing. The minus symbol is

https://math.stackexchange.com/questions/3958074/what-is-the-meaning-of-%E2%8A%8A
3 Answers. Short answer: A ⊊ B A ⊊ B means that A A is a subset of B B and A A is not equal to B B. Long answer: There is some confusion on mathematical textbooks when it comes to the symbols indicating one set is a subset of another. It's relatively clear what the symbol " ⊆ ⊆ " means. This symbol is more or less universally understood

https://en.wikipedia.org/wiki/Bracket_(mathematics)
In elementary algebra, parentheses ( ) are used to specify the order of operations. Terms inside the bracket are evaluated first; hence 2×(3 + 4) is 14, 20 ÷ (5(1 + 1)) is 2 and (2×3) + 4 is 10. This notation is extended to cover more general algebra involving variables: for example (x + y) × (x − y).Square brackets are also often used in place of a second set of parentheses when they

https://wumbo.net/symbols/greater-than-or-equal/
The greater than or equal to symbol is used in math to express the relationship between two math expressions. Typically, the symbol is used in an expression like this: a ≥ b. In plain language, this expression represents that the variable a is greater than or equal to the variable b. The greater than or equal to symbol is used in math to

https://math.stackexchange.com/questions/2788219/whats-the-difference-between-%E2%89%A1-and-%E2%89%A3
3. ≡ ≡ and similar variations are a generic symbols used to notate an equivalence relation. = = is the specific equivalence relation "equals" that we are used to with sets and natural numbers and by extension is also the symbol used for equality of rational, real, complex numbers etc... For more information on the definition of a specific

https://en.wikipedia.org/wiki/Multiplication_sign
The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. While similar to a lowercase X (x), the form is properly a four-fold rotationally symmetric saltire.. The symbol is also used in botany, in botanical hybrid names and the heavy goods vehicle industry, to calculate

https://wumbo.net/symbols/element-of/
Element of Symbol. The ∈ (member of) symbol indicates that an expression on the left-hand side of the symbol belongs to or is in the set on the right-hand side of the symbol. Typically the symbol is used in an expression like this: In plain language, this means that the variable x is a member of the set of real numbers denoted by the symbol R.