https://math.stackexchange.com/questions/864606/difference-between-%E2%89%88-%E2%89%83-and-%E2%89%85
In LaTeX it is coded as \cong. ∼ ∼ is a similarity in geometry and can be used to show that two things are asymptotically equal (they become more equal as you increase a variable like n n ). This is a weaker statement than the other two. In LaTeX it is coded as \sim. ≃ ≃ is more of a grab-bag of meaning.

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://science.howstuffworks.com/math-concepts/basic-math-symbols.htm
Common mathematical symbols are the building blocks of all mathematical functions. Bankrx/Shutterstock. Key Takeaways. The 11 basic symbols essential for writing mathematical equations are the plus (+), minus (-), equals (=), does not equal (≠), multiplication (×), division (÷), greater than (>), less than (<), greater than or equal to (≥), less than or equal to (≤), fraction

https://altcodeunicode.com/alt-codes-math-symbols-operators/
Alt 11007. 2AFF Alt X. N-ary white vertical bar, n-ary Dijkstra choice. &#11007. &#x2AFF. U+2AFF. For more math signs and symbols, see Alt Codes for Math Symbols. For the the complete list of the first 256 Windows Alt Codes, visit Windows Alt Codes for Special Characters & Symbols. How to easily type mathematical operator signs (∃ ∛ ∴

https://www.mathsisfun.com/symbols.html
2(a−3) [ ] grouping symbols: 2[ a−3(b+c) ] { } set symbols {1, 2, 3} π: pi: A = π r 2: ∞: infinity: ∞ is endless = equals: 1+1 = 2: ≈: approximately equal to: π ≈ 3.14: ≠: not equal to: π ≠ 2 < ≤: less than, less than or equal to: 2 < 3 > ≥: greater than, greater than or equal to: 5 > 1: √: square root ("radical") √4

https://emojipedia.org/warning
A triangle with an exclamation mark inside, used as a warning or alert. This emoji is used prominently within social media platform BeReal's core time-sensitive "⚠️ Time to BeReal ⚠️" push notification. This notification is shown when being prompted to share a photo of themselves and their immediate surroundings, with this notification

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://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/dot-operator/
The dot operator symbol is used in math to represent multiplication and, in the context of linear algebra, as the dot product operator. Typically, the symbol is used in an expression like this: 3⋅ 5. In plain language, this expression means three multiplied by five. The interpunct symbol also referred to as the middle dot, dot product symbol

https://www.mathsisfun.com/algebra/symbols.html
√4 = 2: cube root : nth root ( ) grouping symbols (round brackets) 2(a−3) [ ] grouping symbols (square brackets) 2[ a−3(b+c) ] { } set symbols (curly brackets) {1,2,3} = equals: 1+1 = 2: ≈: approximately equal to: π ≈ 3.14: ≠: not equal to: π ≠ 2 < ≤: less than, less than or equal to: 2 < 3 > ≥: greater than, greater than or

https://www.w3schools.com/charsets/ref_utf_math.asp
Hex 2200-22FF / Decimal 8704-8959. If you want any of these characters displayed in HTML, you can use the HTML entity found in the table below. If the character does not have an HTML entity, you can use the decimal (dec) or hexadecimal (hex) reference.

https://www.scribbr.com/language-rules/parentheses/
Parentheses () | Definition, Punctuation, Rules & Examples. Published on April 14, 2015 by Shane Bryson . Revised on November 29, 2022. Parentheses are used to add extra information in a sentence. In academic writing, they are most often used to convey technical information such as equations, to introduce acronyms, and for parenthetical citations.

https://www.thoughtco.com/parenthesis-braces-and-brackets-2312410
Brackets are used after the parentheses to group numbers and variables as well. Typically, you'd use the parentheses first, then brackets, followed by braces. Here is an example of a problem using brackets: = 4 - 3 [4 - 2 (3)] ÷ 3 (Do the operation in the parentheses first; leave the parentheses.)

https://math.stackexchange.com/questions/356472/what-are-these-bracketing-symbols-and-what-do-they-mean
The definition of Floor is $\lfloor x \rfloor$ = Largest integer less than x. This is very similar to rounding down as $\lfloor 2.3 \rfloor = \lfloor 2.999 \rfloor = 2$. However, the subtlety is that for negative numbers it acts slightly differently, as $\lfloor -1.5 \rfloor = -2$ which might not be what you expect at first.

https://www.mathsisfun.com/algebra/brackets.html
Brackets are symbols used in pairs to group things together. When we see things inside brackets we do them first (as explained in Order of Operations ). The parentheses group 3 and 2 together, and 6 and 4 together, so they get done first: Without the parentheses the multiplication is done first: With more complicated grouping we can use

https://javascript.info/operators
An operator is binary if it has two operands. The same minus exists in binary form as well: let x = 1, y = 3; alert( y - x ); // 2, binary minus subtracts values. Formally, in the examples above we have two different operators that share the same symbol: the negation operator, a unary operator that reverses the sign, and the subtraction

https://www.mathematics-monster.com/symbols/Asterisk-Operator.html
Example 2: In complex conjugation, the asterisk signifies the complex conjugate of a number. For instance, if \(z\) is a complex number, its conjugate could be represented as \(z^∗\). In summary, the ∗ symbol is versatile within the mathematical realm, marking operations from basic multiplication to specialized applications in advanced

https://math.stackexchange.com/questions/1614875/what-does-%E2%89%BC-or-%E2%89%BA-mean
2. I think it's probably just notation to distinguish the ordering on F F from that on E E. Other acceptable symbols include ⪯ ⪯, ⊑ ⊑, etc. - Remy. Commented. Jan 16, 2016 at 21:14. 1. To explain what they mean by X ⪯ Y ⇔ X = X ∧ Y X ⪯ Y ⇔ X = X ∧ Y, they are referring to the Meet of X X and Y Y. You have x ∧ y = z ⇔ z

https://mathworld.wolfram.com/Parenthesis.html
2. A parenthesis can be used to denote an open end of an interval. For example, denotes the half-closed interval which includes all real numbers from 0 to 5 except 5 itself. 3. Parentheses are used to enclose the variables of a function in the form , which means that values of the function are dependent upon the values of . 4.

https://math.stackexchange.com/questions/2864497/what-does-%E2%A9%94-mean
$\begingroup$ The first 2 paragraphs explain 2 example usages, the third paragraph gives the MathJax for similar characters and the one in question; which in one comment Asaf said there was only an empty block, causing Daniel to include an image instead of relying on MathJax - it is an addition which aids those two and those that arrive here hoping for related information or how to write the

https://math.stackexchange.com/questions/3307575/what-does-this-symbol-%E2%86%91-mean
So "3 2 ↑" is probably supposed to mean "three to the power of two", or 3². With more context, one could be more sure (and probably write this as the most likely answer) $\endgroup$ - Marco13. Commented Jul 29, 2019 at 17:11 $\begingroup$ Thank for your help $\endgroup$ - Nam Hoang.