- notation - What does := mean? - Mathematics Stack Exchange
It's one common notation for stating that the left-hand side is defined as (in contrast to equal to) the expression on the right-hand side
- notation - The best symbol for non-negative integers? - Mathematics . . .
The set of natural numbers $\ {0,1,2,\dots\}$ is often denoted by $\omega$ There are two caveats about this notation: It is not commonly used outside of set theory, and it might not be recognised by non-set-theorists In "everyday mathematics", the symbol $\mathbb N$ is rarely used to refer to a specific model of the natural numbers
- notation - Correct way for writing domain of a function - Mathematics . . .
The notation $\ {x \in \mathbb {R} \}$ is a little ambiguous, but would probably be understood As Eike Schulte points out, there is something missing—either the "selection criterion" which tells you how you are choosing element of $\mathbb {R}$, or you are specifying the name and domain of some variable which will be acted on by some
- notation - What is the mathematical symbol for range? - Mathematics . . .
An unsophisticated question from a neophyte: Given the numbers: $1,2,3,4,5$ What is the symbol for the range of the numbers? i e the lowest-highest number in the set For example, the min max
- notation - Difference between ≈, ≃, and ≅ - Mathematics Stack . . .
In mathematical notation, what are the usage differences between the various approximately-equal signs "≈", "≃", and "≅"? The Unicode standard lists all of them inside the Mathematical Operators Block
- What is the symbol to refer to the set of whole numbers
To summarize what has been said in the comments, there are no "official" symbols Use whichever notation you feel most comfortable with, as long as it makes sense and can be easily understood by the general audience Some examples include: $\mathbb {Z}_ {\ge 0},\mathbb {Z}^ {+}\cup\ {0\},\mathbb {N}\cup\ {0\},\mathbb {N}_0$ Also note that because of different conventions, what you refer to as
- Notation for the least common multiple and greatest common divisor
The (bad) notation $ (a,b)$ is often used for the greatest common divisor; somebody uses $ [a,b]$ for the lowest common multiple Why are they bad, in particular the former? Because $ (a,b)$ is already used for several other purposes
- notation - What does ∈ mean? - Mathematics Stack Exchange
I have started seeing the "∈" symbol in math What exactly does it mean? I have tried googling it but google takes the symbol out of the search
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