Mar 18, 2011 · 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.

Apr 20, 2016 · So, now they have anonymous functions, defined through lambda terms, the actual syntax used for the terms more closely resembling the arrow notation than the lambda notation.

Jun 25, 2014 · 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.

Aug 19, 2015 · 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 …

Dec 9, 2019 · 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" …

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 …

Dec 13, 2016 · 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 …

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.

Sep 11, 2017 · Sometimes $\mathbb {N}_0$ is used to denote the natural numbers including zero, so this notation may be ambiguous.

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 …