notation - What does the function f: x ↦ y mean? - Mathematics Stack . . . the notation $\mapsto$ ("maps to", an arrow with a bar at its tail) There is another arrow-symbol, which also used for mapping $\rightarrow$, which might be a bit confusing The difference between two (as it is mentioned in the linked answer , as well as in the answer by MathEnthusiast ):
notation - Symbol for “such that” (not in set) - Mathematics Stack Exchange A better, but less common, notation is $\varepsilon$ (formatted with $\varepsilon$) You can find answers and comments related to that latter symbol $\varepsilon$ in the linked posts You can find answers and comments related to that latter symbol $\varepsilon$ in the linked posts
Much less than, what does that mean? - Mathematics Stack Exchange Would I have to rewrite this as $$\sum_{n\leq x}d(n)-x\log x\ll x,$$ i e the rhs must purely relate to the Big O notation when using $\ll$ ? $\endgroup$ – pshmath0 Commented Oct 10, 2019 at 5:13
notation - What does := mean? - Mathematics Stack Exchange $\begingroup$ I was aware of Pascal using :=, but not the others I think it is possible that the language designers of that time where influenced by maths (as has happened a number of times), but := is so far the only easily typable symbol mentioned here, so it is perfectly reasonable to assume it stems from programming languages in the first place
notation - Math Symbol for Where - Mathematics Stack Exchange They are integral parts of larger notations which don't have any individual formal meaning -- the fact that expressing the entire notation in English sometimes involves saying "such that" between the things the symbol stands between in the symbolic form doesn't make those words into a definition of the symbol $\endgroup$ –
notation - The best symbol for non-negative integers? - Mathematics . . . 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 selection
notation - What does versus mean in the context of a graph . . . $\begingroup$ I can honestly say i don't think i have heard the "versus" terminology used in math courses, but i hear it and see it used all the time in other sciences courses, chemistry, physics, etc Ive wondered about it for so long but am finally stuck on something, where the interpretation is makes or breaks the answer